Price="free" yields nothing

infinite-persistence commented 4 years ago

If "Anything" yields a bunch of free items, "Free" should yield the same thing, right? https://youtu.be/HxOm51r8ERY

Seems to only affect Following + New query.

infinite-persistence commented 4 years ago

Hmm, mine is working on master with just =0. On one of my accounts, I did see a query timeout...let me track that down. Maybe that's what you were seeing and not 0 results. I'm not sure how this fix would help...but maybe some strange sql quirk on the SDK.

@tzarebczan, I can still reproduce it consistently when I switch back to 0, and "fix" it with <=0

My setup:

yarn dev, which starts as logged out but with valid wallet. I didn't log back in.
Only following 2 channels

Query with "0" (click to expand)

``` {jsonrpc: "2.0", method: "claim_search", params: {page_size: 20, page: 1, no_totals: true,…},…} id: 1594182448368 jsonrpc: "2.0" method: "claim_search" params: {page_size: 20, page: 1, no_totals: true,…} channel_ids: ["e48d2b50501159034f68d53321f67b8aa5b1d771", "fb364ef587872515f545a5b4b3182b58073f230f"] fee_amount: "0" include_purchase_receipt: true no_totals: true not_channel_ids: [] not_tags: [] order_by: ["release_time"] page: 1 page_size: 20 release_time: "<1594182420" ```

RPCError for "0" case (click to expand)

``` { "error": { "code": -32500, "data": { "args": [], "command": "claim_search", "kwargs": { "channel_ids": [ "e48d2b50501159034f68d53321f67b8aa5b1d771", "fb364ef587872515f545a5b4b3182b58073f230f" ], "fee_amount": "0", "include_purchase_receipt": true, "no_totals": true, "not_channel_ids": [], "not_tags": [], "order_by": [ "release_time" ], "page": 1, "page_size": 20, "release_time": "<1594182420" }, "name": "RPCError", "traceback": [ "Traceback (most recent call last):", " File \"lbry/extras/daemon/daemon.py\", line 700, in _process_rpc_call", " File \"lbry/extras/daemon/daemon.py\", line 2445, in jsonrpc_claim_search", " File \"lbry/wallet/ledger.py\", line 810, in claim_search", " File \"lbry/wallet/ledger.py\", line 707, in _inflate_outputs", " File \"lbry/wallet/network.py\", line 83, in send_request", " File \"lbry/wallet/network.py\", line 73, in send_request", " File \"lbry/wallet/rpc/session.py\", line 483, in send_request", "lbry.wallet.rpc.jsonrpc.RPCError: (-32000, 'sqlite query timed out')", "" ] }, "message": "(-32000, 'sqlite query timed out')" }, " ```

For comparison, this is what I get with "<=0":

"<=0" case (click to expand (long))

``` {jsonrpc: "2.0", method: "claim_search", params: {page_size: 20, page: 1, no_totals: true,…},…} id: 1594183001093 jsonrpc: "2.0" method: "claim_search" params: {page_size: 20, page: 1, no_totals: true,…} channel_ids: ["e48d2b50501159034f68d53321f67b8aa5b1d771", "fb364ef587872515f545a5b4b3182b58073f230f"] fee_amount: "<=0" include_purchase_receipt: true no_totals: true not_channel_ids: [] not_tags: [] order_by: ["release_time"] page: 1 page_size: 20 release_time: "<1594182960" ``` ``` { "jsonrpc": "2.0", "result": { "blocked": { "channels": [], "total": 0 }, "items": [ { "address": "bNb4ZrGrsUZSn3QFzqhBStkdxjA7RBJxxw", "amount": "0.01", "canonical_url": "lbry://@veritasium#f/turbulent-flow-is-more-awesome-than#c", "claim_id": "c29080149c0155d0ff57bebda17a8e6c2ea5ceb0", "claim_op": "create", "confirmations": 14279, "height": 779424, "is_channel_signature_valid": true, "meta": { "activation_height": 779424, "creation_height": 779424, "creation_timestamp": 1591897249, "effective_amount": "743.01", "expiration_height": 2881824, "is_controlling": true, "reposted": 38, "support_amount": "743.0", "take_over_height": 779424, "trending_global": 0.0, "trending_group": 0, "trending_local": 0.0, "trending_mixed": 4.017242431640625 }, "name": "turbulent-flow-is-more-awesome-than", "normalized_name": "turbulent-flow-is-more-awesome-than", "nout": 0, "permanent_url": "lbry://turbulent-flow-is-more-awesome-than#c29080149c0155d0ff57bebda17a8e6c2ea5ceb0", "short_url": "lbry://turbulent-flow-is-more-awesome-than#c", "signing_channel": { "address": "bNb4ZrGrsUZSn3QFzqhBStkdxjA7RBJxxw", "amount": "0.005", "canonical_url": "lbry://@veritasium#f", "claim_id": "fb364ef587872515f545a5b4b3182b58073f230f", "claim_op": "update", "confirmations": 97413, "has_signing_key": false, "height": 696290, "meta": { "activation_height": 549756, "claims_in_channel": 289, "creation_height": 549756, "creation_timestamp": 1555015523, "effective_amount": "263905.380631", "expiration_height": 2652156, "is_controlling": true, "reposted": 0, "support_amount": "263905.375631", "take_over_height": 606290, "trending_global": 0.0, "trending_group": 0, "trending_local": 0.0, "trending_mixed": 4.3770786106733794e-08 }, "name": "@veritasium", "normalized_name": "@veritasium", "nout": 0, "permanent_url": "lbry://@veritasium#fb364ef587872515f545a5b4b3182b58073f230f", "short_url": "lbry://@veritasium#f", "timestamp": 1578536238, "txid": "07be6a81bc3ac539284f030b2a353b64ed277ed0ea1916456293217b74460b87", "type": "claim", "value": { "cover": { "url": "https://thumbnails.lbry.com/banner-UCHnyfMqiRRG1u-2MsSQLbXA" }, "description": "An element of truth - videos about science, education, and anything else I find interesting.", "locations": [ { "country": "US" } ], "public_key": "3056301006072a8648ce3d020106052b8104000a0342000490e4b9181b040c84274d2680c8ab402593610f5102fc9b83c8657bb8b209da2a3d3ba6058083a5195a9bca7ab84737032f050a32d8173af4b00f1a379404aea5", "public_key_id": "bRbG67Kpr8bANiqZGm4LB3dqgcMC3Q5awj", "tags": [ "learning", "science" ], "thumbnail": { "url": "https://thumbnails.lbry.com/UCHnyfMqiRRG1u-2MsSQLbXA" }, "title": "Veritasium" }, "value_type": "channel" }, "timestamp": 1591897249, "txid": "73f8bbda8aab34368003807be56835f1f81ab1387b871700b1f66e3e7a5118c5", "type": "claim", "value": { "description": "Everyone loves laminar flow but turbulent flow is the real MVP. \nA portion of this video was sponsored by Cottonelle. Purchase Cottonelle Flushable Wipes and try them for yourself: https://bit.ly/2WJm9Hq\n\nSpecial thanks to:\nProf. Beverley McKeon and team https://www.mckeon.caltech.edu\nDestin from Smarter Every Day https://www.youtube.com/smartereveryday\n\nI got into turbulent flow via chaos. The transition to turbulence sometimes involves a period doubling. Turbulence itself is chaotic motion, it is unpredictable and sensitively dependent on initial conditions. What surprised me is all the ways turbulent flow is useful to us. It is diffusive, meaning it causes mixing. This is useful in jet engines or rocket nozzles (which Destin studies) and is important to achieve in microfluidic devices, which are so small that turbulent flow is actually difficult to achieve. Turbulent flow can energize a boundary layer, which is important to maintain flow attachment over a wing, maintaining lift and delaying stall. Similarly a turbulent boundary layer over a golf ball reduces pressure drag allowing golf balls to fly further. This is the reason for the dimples on golf balls. Flow transitioning to turbulence in the wake of a bluff body can create periodic vortex shedding. This beautiful phenomenon can be seen in the von K\u00e0rm\u00e0n vortex street in clouds viewed from space. Turbulence is everywhere, in the air currents in a room, in your aorta, in the breaths you exhale, in oil pipelines and water pipes, in the flow over cars and ships and planes. Animals have evolved for it (like dead fish swimming up stream) and we have engineered our environment, our planes and golf balls for it. Laminar flow may be nice to look at (which is why we use it in decorative fountains) but turbulent flow does the real lifting.\n\nAnimations by:\nJonny Hyman (Sun, Jupiter, Reynolds, airfoil, Earth time-lapse)\n\nResearch and writing:\nAJ Fillo and Derek Muller. AJ also created the wind tunnel golf ball shots\n\nFilmed by:\nDaniel Bydlowski and Derek Muller\n\nAdditional footage:\nImages of Jupiter courtesy of NASA\nTurbulence in air currents by the Physics Girl, Dan Walsh, and Grant Sanderson https://youtu.be/N7d_RWyOv20\nhttps://youtu.be/_UoTTq651dE\n\nMusic:\nillBird \"Shaffuru\" https://youtu.be/5rkt53fNMgc\nFrom EpidemicSound https://epidemicsound.com \"Seaweed\" \"Colorful Animation 4\"\nKevin MacLeod https://incompetech.com \"Sneaky Adventure\"\n...\nhttps://www.youtube.com/watch?v=5zI9sG3pjVU", "languages": [ "en" ], "license": "Copyrighted (contact publisher)", "release_time": "1591884004", "source": { "hash": "0a1c135f71c6017771fd35ee1d0c3ce1df4a647f65391aa8a3b2bf500003ac7a973b836685759c4234e9ee6ab1bf617e", "media_type": "video/mp4", "name": "turbulent-flow-is-more-awesome.mp4", "sd_hash": "cb598c418a87ba4002c43d5910227a9347bde0a25f5f62f9c49e467b8636694d198ee665ab21c8d5b11b1a9f4b866cb1", "size": "310356835" }, "stream_type": "video", "tags": [ "learning", "science", "airplane", "bath tissue", "beauty routine", "best toilet paper", "boundary layer", "cottonelle", "cottonelle flushable wipes", "cottonelle toilet paper", "down there care", "down there care routine", "downtherecare", "flush", "flushable", "flushable wipes", "golf ball", "laminar", "laminar flow", "morning routine", "physics", "plane", "toilet", "toilet paper", "turbulence", "turbulent", "turbulent flow", "veritasium", "vortex street", "wellness routine", "workout routine", "education" ], "thumbnail": { "url": "https://thumbnails.lbry.com/5zI9sG3pjVU" }, "title": "Turbulent Flow is MORE Awesome Than Laminar Flow", "video": { "duration": 1111, "height": 1080, "width": 1920 } }, "value_type": "stream" }, { "address": "bZ9izGbGK7RVV243MGe3hmxnxGSQMgSN5q", "amount": "0.1", "canonical_url": "lbry://@jiggytom#e/test-yt-upload-1#1", "claim_id": "15ebf89128addb7fd3ace3960478fff1c30406f8", "claim_op": "create", "confirmations": 63975, "height": 729728, "is_channel_signature_valid": true, "meta": { "activation_height": 729728, "creation_height": 729728, "creation_timestamp": 1583906271, "effective_amount": "2.1", "expiration_height": 2832128, "is_controlling": true, "reposted": 0, "support_amount": "2.0", "take_over_height": 729728, "trending_global": 0.0, "trending_group": 0, "trending_local": 0.0, "trending_mixed": 0.0 }, "name": "test-yt-upload-1", "normalized_name": "test-yt-upload-1", "nout": 0, "permanent_url": "lbry://test-yt-upload-1#15ebf89128addb7fd3ace3960478fff1c30406f8", "short_url": "lbry://test-yt-upload-1#1", "signing_channel": { "address": "bUhmrHrVjtW6wAZaeAwo3aA8JMa54XSCta", "amount": "10.0", "canonical_url": "lbry://@jiggytom#e", "claim_id": "e48d2b50501159034f68d53321f67b8aa5b1d771", "claim_op": "create", "confirmations": 631538, "has_signing_key": false, "height": 162165, "meta": { "activation_height": 162165, "claims_in_channel": 23, "creation_height": 162165, "creation_timestamp": 1492792760, "effective_amount": "10.0", "expiration_height": 2264565, "is_controlling": true, "reposted": 0, "support_amount": "0.0", "take_over_height": 763571, "trending_global": 0.0, "trending_group": 0, "trending_local": 0.0, "trending_mixed": 0.0 }, "name": "@jiggytom", "normalized_name": "@jiggytom", "nout": 0, "permanent_url": "lbry://@jiggytom#e48d2b50501159034f68d53321f67b8aa5b1d771", "short_url": "lbry://@jiggytom#e", "timestamp": 1492792760, "txid": "23c1d45d3a317157eeaed59d82af3398be3a25e47d1471daf087598195ff63d8", "type": "claim", "value": { "public_key": "3056301006072a8648ce3d020106052b8104000a034200046588d24a874cce751c4532fa7419e376cc9aca77748f809f123b9074bdb1f7f7a4e9937213994c36800315a8a416e13d025f14cf3e074530dc2823e24a86f453", "public_key_id": "bVzhLWch2BXjQNNs2Visg3a3hrTWbCiDUQ" }, "value_type": "channel" }, "timestamp": 1583906271, "txid": "9932c6556d4a64363cc9f14b77d9d41618f1b940228e4917c0e2c3a61c4343eb", "type": "claim", "value": { "languages": [ "en" ], "license": "None", "release_time": "1583905582", "source": { "hash": "fe42cf5243c7a988036ceeba1697064cfd8ffb82b7d32675bffee25612cdfc7d0d9514677c82e29d22c6ba1552acfb03", "media_type": "video/mp4", "name": "app slowness.mp4", "sd_hash": "5c11299625e46866b36bd705e7e6a33173b2c3637451c6957742a2216b394950ffe33553239b1337f62b9b839e79586b", "size": "1678957" }, "stream_type": "video", "thumbnail": { "url": "https://spee.ch/f/wWRHCrRLVNPhUmCmKU4nJL7H.png" }, "title": "test yt upload", "video": { "duration": 22, "height": 1076, "width": 1624 } }, "value_type": "stream" }, { "address": "bNb4ZrGrsUZSn3QFzqhBStkdxjA7RBJxxw", "amount": "0.01", "canonical_url": "lbry://@veritasium#f/parallel-worlds-probably-exist-here-s#0", "claim_id": "00a5ad3f5fd0e6e895f1ecd4134112114dd1ec90", "claim_op": "create", "confirmations": 66308, "height": 727395, "is_channel_signature_valid": true, "meta": { "activation_height": 727395, "creation_height": 727395, "creation_timestamp": 1583528599, "effective_amount": "3643.3", "expiration_height": 2829795, "is_controlling": true, "reposted": 21, "support_amount": "3643.29", "take_over_height": 727395, "trending_global": 0.0, "trending_group": 0, "trending_local": 0.0, "trending_mixed": 0.0014651999808847904 }, "name": "parallel-worlds-probably-exist-here-s", "normalized_name": "parallel-worlds-probably-exist-here-s", "nout": 0, "permanent_url": "lbry://parallel-worlds-probably-exist-here-s#00a5ad3f5fd0e6e895f1ecd4134112114dd1ec90", "short_url": "lbry://parallel-worlds-probably-exist-here-s#0", "signing_channel": { "address": "bNb4ZrGrsUZSn3QFzqhBStkdxjA7RBJxxw", "amount": "0.005", "canonical_url": "lbry://@veritasium#f", "claim_id": "fb364ef587872515f545a5b4b3182b58073f230f", "claim_op": "update", "confirmations": 97413, "has_signing_key": false, "height": 696290, "meta": { "activation_height": 549756, "claims_in_channel": 289, "creation_height": 549756, "creation_timestamp": 1555015523, "effective_amount": "263905.380631", "expiration_height": 2652156, "is_controlling": true, "reposted": 0, "support_amount": "263905.375631", "take_over_height": 606290, "trending_global": 0.0, "trending_group": 0, "trending_local": 0.0, "trending_mixed": 4.3770786106733794e-08 }, "name": "@veritasium", "normalized_name": "@veritasium", "nout": 0, "permanent_url": "lbry://@veritasium#fb364ef587872515f545a5b4b3182b58073f230f", "short_url": "lbry://@veritasium#f", "timestamp": 1578536238, "txid": "07be6a81bc3ac539284f030b2a353b64ed277ed0ea1916456293217b74460b87", "type": "claim", "value": { "cover": { "url": "https://thumbnails.lbry.com/banner-UCHnyfMqiRRG1u-2MsSQLbXA" }, "description": "An element of truth - videos about science, education, and anything else I find interesting.", "locations": [ { "country": "US" } ], "public_key": "3056301006072a8648ce3d020106052b8104000a0342000490e4b9181b040c84274d2680c8ab402593610f5102fc9b83c8657bb8b209da2a3d3ba6058083a5195a9bca7ab84737032f050a32d8173af4b00f1a379404aea5", "public_key_id": "bRbG67Kpr8bANiqZGm4LB3dqgcMC3Q5awj", "tags": [ "learning", "science" ], "thumbnail": { "url": "https://thumbnails.lbry.com/UCHnyfMqiRRG1u-2MsSQLbXA" }, "title": "Veritasium" }, "value_type": "channel" }, "timestamp": 1583528599, "txid": "0112742969fd726d5d25884872a987ce7905d920a81c23bec846fd36d13c2fe0", "type": "claim", "value": { "description": "The most elegant interpretation of quantum mechanics is the universe is constantly splitting\nA portion of this video was sponsored by Norton. Get up to 60% off the first year (annually billed) here: https://bit.ly/32SM0yd or use promo code VERITASIUM\n\nSpecial thanks to:\nProf. Sean Carroll https://www.preposterousuniverse.com\nHis book, a major source for this video is 'Something Deeply Hidden: Quantum Worlds and The Emergence of Spacetime'\n\nI learned quantum mechanics the traditional 'Copenhagen Interpretation' way. We can use the Schr\u00f6dinger equation to solve for and evolve wave functions. Then we invoke wave-particle duality, in essence things we detect as particles can behave as waves when they aren't interacting with anything. But when there is a measurement, the wave function collapses leaving us with a definite particle detection. If we repeat the experiment many times, we find the statistics of these results mirror the amplitude of the wave function squared. Hence the Born rule came into being, saying the wave function should be interpreted statistically, that our universe at the most fundamental scale is probabilistic rather than deterministic. This did not sit well with scientists like Einstein and Schr\u00f6dinger who believed there must be more going on, perhaps 'hidden variables'.\n\nIn the 1950's Hugh Everett proposed the Many Worlds interpretation of quantum mechanics. It is so logical in hindsight but with a bias towards the classical world, experiments and measurements to guide their thinking, it's understandable why the founders of quantum theory didn't come up with it. Rather than proposing different dynamics for measurement, Everett suggests that measurement is something that happens naturally in the course of quantum particles interacting with each other. The conclusion is inescapable. There is nothing special about measurement, it is just the observer becoming entangled with a wave function in a superposition. Since one observer can experience only their own branch, it appears as if the other possibilities have disappeared but in reality there is no reason why they could not still exist and just fail to interact with the other branches. This is caused by environmental decoherence.\n\nSchrodinger's cat animation by Iv\u00e1n Tello\nWave functions, double slit and entanglement animation by Jonny Hyman\nFilming of opening sequence by Casey Rentz\n\nSpecial thanks to Mithuna Y, Raquel Nuno and Dianna Cowern for feedback on the script\n\nMusic from https://epidemicsound.com \"Experimental 1\" \"Serene Story 2\" \"Seaweed\" \"Colorful Animation 4\"\n...\nhttps://www.youtube.com/watch?v=kTXTPe3wahc", "languages": [ "en" ], "license": "Copyrighted (contact publisher)", "release_time": "1583516433", "source": { "hash": "0f3b73b447a53bf40ab4b8d64a58b096cfd5817549c1608eef124facee39e413e006e7df3cce16989a32dba9c80c5ca3", "media_type": "video/mp4", "name": "parallel-worlds-probably-exist.mp4", "sd_hash": "fd82fb9a1e87a4335efbce92bc09008cb0194ace891a246b574888b2d9a078859fca80bdef67d9acf3ac35a7c587a859", "size": "251686719" }, "stream_type": "video", "tags": [ "learning", "science", "branching", "cat", "cyber", "cyber safety", "decoherence", "entanglement", "everett", "lifelock", "many worlds", "multiverse", "norton", "norton 360", "norton antivirus", "norton secure vpn", "norton security", "norton vpn", "parallel universe", "physics", "quantum", "quantum mechanics", "schrodinger", "schrodingers cat", "sean carroll", "security", "shrodinger", "superposition", "universes", "veritasium", "wave function", "education" ], "thumbnail": { "url": "https://thumbnails.lbry.com/kTXTPe3wahc" }, "title": "Parallel Worlds Probably Exist. Here\u2019s Why", "video": { "duration": 1199, "height": 1012, "width": 1920 } }, "value_type": "stream" }, { "address": "bNb4ZrGrsUZSn3QFzqhBStkdxjA7RBJxxw", "amount": "0.01", "canonical_url": "lbry://@veritasium#f/this-equation-will-change-how-you-see#b", "claim_id": "be0129802bb5b2d1d73b26249bef2dfeae7859d3", "claim_op": "create", "confirmations": 86195, "height": 707508, "is_channel_signature_valid": true, "meta": { "activation_height": 707508, "creation_height": 707508, "creation_timestamp": 1580329272, "effective_amount": "3146.3459", "expiration_height": 2809908, "is_controlling": true, "reposted": 20, "support_amount": "3146.3359", "take_over_height": 707508, "trending_global": 0.0, "trending_group": 0, "trending_local": 0.0, "trending_mixed": 0.00020228512585163116 }, "name": "this-equation-will-change-how-you-see", "normalized_name": "this-equation-will-change-how-you-see", "nout": 0, "permanent_url": "lbry://this-equation-will-change-how-you-see#be0129802bb5b2d1d73b26249bef2dfeae7859d3", "short_url": "lbry://this-equation-will-change-how-you-see#b", "signing_channel": { "address": "bNb4ZrGrsUZSn3QFzqhBStkdxjA7RBJxxw", "amount": "0.005", "canonical_url": "lbry://@veritasium#f", "claim_id": "fb364ef587872515f545a5b4b3182b58073f230f", "claim_op": "update", "confirmations": 97413, "has_signing_key": false, "height": 696290, "meta": { "activation_height": 549756, "claims_in_channel": 289, "creation_height": 549756, "creation_timestamp": 1555015523, "effective_amount": "263905.380631", "expiration_height": 2652156, "is_controlling": true, "reposted": 0, "support_amount": "263905.375631", "take_over_height": 606290, "trending_global": 0.0, "trending_group": 0, "trending_local": 0.0, "trending_mixed": 4.3770786106733794e-08 }, "name": "@veritasium", "normalized_name": "@veritasium", "nout": 0, "permanent_url": "lbry://@veritasium#fb364ef587872515f545a5b4b3182b58073f230f", "short_url": "lbry://@veritasium#f", "timestamp": 1578536238, "txid": "07be6a81bc3ac539284f030b2a353b64ed277ed0ea1916456293217b74460b87", "type": "claim", "value": { "cover": { "url": "https://thumbnails.lbry.com/banner-UCHnyfMqiRRG1u-2MsSQLbXA" }, "description": "An element of truth - videos about science, education, and anything else I find interesting.", "locations": [ { "country": "US" } ], "public_key": "3056301006072a8648ce3d020106052b8104000a0342000490e4b9181b040c84274d2680c8ab402593610f5102fc9b83c8657bb8b209da2a3d3ba6058083a5195a9bca7ab84737032f050a32d8173af4b00f1a379404aea5", "public_key_id": "bRbG67Kpr8bANiqZGm4LB3dqgcMC3Q5awj", "tags": [ "learning", "science" ], "thumbnail": { "url": "https://thumbnails.lbry.com/UCHnyfMqiRRG1u-2MsSQLbXA" }, "title": "Veritasium" }, "value_type": "channel" }, "timestamp": 1580329272, "txid": "4f2ec14b0a3d4a80fdcdd26244e10dd77d3ed4889506773a2af5a9a345e5fde9", "type": "claim", "value": { "description": "The logistic map connects fluid convection, neuron firing, the Mandelbrot set and so much more. Fasthosts are giving UK viewers the chance to win tickets, flight, and accommodation to SXSW 2020 by answering my Techie Test question: https://www.fasthosts.co.uk/veritasium \n\nAnimations, coding, interactives in this video by Jonny Hyman \ud83d\ude4c\nTry the code yourself: https://github.com/jonnyhyman/Chaos\n\nReferences:\nJames Gleick, Chaos\nSteven Strogatz, Nonlinear Dynamics and Chaos\n\nMay, R. Simple mathematical models with very complicated dynamics. Nature 261, 459\u2013467 (1976). https://doi.org/10.1038/261459a0\n\nRobert Shaw, The Dripping Faucet as a Model Chaotic System\nhttps://archive.org/details/ShawRobertDrippingFaucetAsAModelChaoticSystem1984_201811/mode/2up\n\nCrevier DW, Meister M. Synchronous period-doubling in flicker vision of salamander and man.\nJ Neurophysiol. 1998 Apr;79(4):1869-78.\n\nBing Jia, Huaguang Gu, Li Li, Xiaoyan Zhao. Dynamics of period-doubling bifurcation to chaos in the spontaneous neural firing patterns Cogn Neurodyn (2012) 6:89\u2013106 DOI 10.1007/s11571-011-9184-7\n\nA Garfinkel, ML Spano, WL Ditto, JN Weiss. Controlling cardiac chaos\nScience 28 Aug 1992: Vol. 257, Issue 5074, pp. 1230-1235 DOI: 10.1126/science.1519060\n\nR. M. May, D. M. G. Wishart, J. Bray and R. L. Smith Chaos and the Dynamics of Biological Populations\nSource: Proceedings of the Royal Society of London. Series A, Mathematical and Physical Sciences, Vol. 413, No. 1844, Dynamical Chaos (Sep. 8, 1987), pp. 27-44\n\nChialvo, D., Gilmour Jr, R. & Jalife, J. Low dimensional chaos in cardiac tissue. Nature 343, 653\u2013657 (1990). https://doi.org/10.1038/343653a0\n\nXujun Ye, Kenshi Sakai. A new modified resource budget model for nonlinear dynamics in citrus production. Chaos, Solitons and Fractals 87 (2016) 51\u201360\n\nLibchaber, A. & Laroche, C. & Fauve, Stephan. (1982). Period doubling cascade in mercury, a quantitative measurement. http://dx.doi.org/10.1051/jphyslet:01982004307021100. 43. 10.1051/jphyslet:01982004307021100. \n\nSpecial thanks to Patreon Supporters:\nAlfred Wallace, Arjun Chakroborty, Bryan Baker, DALE HORNE, Donal Botkin, halyoav, James Knight, Jasper Xin, Joar Wandborg, Lee Redden, Lyvann Ferrusca, Michael Krugman, Pindex, Ron Neal, Sam Lutfi, Tige Thorman, Vincent\n\nSpecial thanks to:\nHenry Reich for feedback on earlier versions of this video\nRaquel Nuno for enduring many earlier iterations (including parts she filmed that were replaced)\nDianna Cowern for title suggestions and saying earlier versions weren't good\nHeather Zinn Brooks for feedback on an earlier version.\n\n\nMusic from:\nhttps://epidemicsound.com \"What We Discovered\" \"A Sound Foundation 1\" \"Seaweed\" \"Colored Spirals 4\" \n\nhttps://ve42.co/Artlist \"Busy World\" \"Children of Mystery\"\n...\nhttps://www.youtube.com/watch?v=ovJcsL7vyrk", "languages": [ "en" ], "license": "Copyrighted (contact publisher)", "release_time": "1580326546", "source": { "hash": "cf934ff39e5e92859120cf820c67446f4da7d09e6ee87822e7633fac8706f86c563039e7e6659ff163869c7ecc6768c0", "media_type": "video/mp4", "name": "this-equation-will-change-how.mp4", "sd_hash": "90ee52eda193e321805360c1b64e5ca671f26ba924435cdc5aa6a66809887e606505eef2ecf9c8ea88bb227d647bc62b", "size": "119805229" }, "stream_type": "video", "tags": [ "learning", "science", "behavior", "bifurcation", "bifurcation diagram", "butterfly effect", "chaos", "chaotic", "convection", "dripping", "equation", "feigenbaum", "fibrillation", "iterated", "libchaber", "logistic", "logistic map", "neuron", "physics", "population", "veritasium", "education" ], "thumbnail": { "url": "https://thumbnails.lbry.com/ovJcsL7vyrk" }, "title": "This equation will change how you see the world", "video": { "duration": 1118, "height": 818, "width": 1920 } }, "value_type": "stream" }, { "address": "bNb4ZrGrsUZSn3QFzqhBStkdxjA7RBJxxw", "amount": "0.005", "canonical_url": "lbry://@veritasium#f/why-most-resolutions-fail-how-to-succeed#f", "claim_id": "f4905fa1bffc1299c8a265e4be9ff4a4dbe38eeb", "claim_op": "update", "confirmations": 97414, "height": 696289, "is_channel_signature_valid": true, "meta": { "activation_height": 691297, "creation_height": 691297, "creation_timestamp": 1577733567, "effective_amount": "1739.515", "expiration_height": 2793697, "is_controlling": true, "reposted": 5, "support_amount": "1739.51", "take_over_height": 691297, "trending_global": 0.0, "trending_group": 0, "trending_local": 0.0, "trending_mixed": 0.0 }, "name": "why-most-resolutions-fail-how-to-succeed", "normalized_name": "why-most-resolutions-fail-how-to-succeed", "nout": 0, "permanent_url": "lbry://why-most-resolutions-fail-how-to-succeed#f4905fa1bffc1299c8a265e4be9ff4a4dbe38eeb", "short_url": "lbry://why-most-resolutions-fail-how-to-succeed#f", "signing_channel": { "address": "bNb4ZrGrsUZSn3QFzqhBStkdxjA7RBJxxw", "amount": "0.005", "canonical_url": "lbry://@veritasium#f", "claim_id": "fb364ef587872515f545a5b4b3182b58073f230f", "claim_op": "update", "confirmations": 97413, "has_signing_key": false, "height": 696290, "meta": { "activation_height": 549756, "claims_in_channel": 289, "creation_height": 549756, "creation_timestamp": 1555015523, "effective_amount": "263905.380631", "expiration_height": 2652156, "is_controlling": true, "reposted": 0, "support_amount": "263905.375631", "take_over_height": 606290, "trending_global": 0.0, "trending_group": 0, "trending_local": 0.0, "trending_mixed": 4.3770786106733794e-08 }, "name": "@veritasium", "normalized_name": "@veritasium", "nout": 0, "permanent_url": "lbry://@veritasium#fb364ef587872515f545a5b4b3182b58073f230f", "short_url": "lbry://@veritasium#f", "timestamp": 1578536238, "txid": "07be6a81bc3ac539284f030b2a353b64ed277ed0ea1916456293217b74460b87", "type": "claim", "value": { "cover": { "url": "https://thumbnails.lbry.com/banner-UCHnyfMqiRRG1u-2MsSQLbXA" }, "description": "An element of truth - videos about science, education, and anything else I find interesting.", "locations": [ { "country": "US" } ], "public_key": "3056301006072a8648ce3d020106052b8104000a0342000490e4b9181b040c84274d2680c8ab402593610f5102fc9b83c8657bb8b209da2a3d3ba6058083a5195a9bca7ab84737032f050a32d8173af4b00f1a379404aea5", "public_key_id": "bRbG67Kpr8bANiqZGm4LB3dqgcMC3Q5awj", "tags": [ "learning", "science" ], "thumbnail": { "url": "https://thumbnails.lbry.com/UCHnyfMqiRRG1u-2MsSQLbXA" }, "title": "Veritasium" }, "value_type": "channel" }, "timestamp": 1578536058, "txid": "490d6ded060b6cc5e11b6d92364e076307be87c1a59b0cd4db56935c8a35f052", "type": "claim", "value": { "description": "Common pitfalls of New Year's resolutions and how I plan to avoid them. Thanks Audible! Start listening with a 30-day trial and your first audiobook plus two Audible Originals free when you go to https://audible.com/veritasium or text veritasium to 500500.\n\nThanks to Simone Giertz for sending me and Every Day Calendar!\nGet notified when they're available to order here: http://www.simonegiertz.com/every-day-calendar\n\nSpecial thanks to Patreon Supporters:\nAlfred Wallace, Arjun Chakroborty, Chuck Lauer Vose, Dale Horne, Jasper Xin, Joar Wandborg, Kevin Beavers, Leah Howard, Lyvann Ferrusca, Michael Krugman, Noel Braganza, Ron Neal, Tige Thorman\n...\nhttps://www.youtube.com/watch?v=Pm9CQn07OjU", "languages": [ "en" ], "license": "Copyrighted (contact publisher)", "release_time": "1577556439", "source": { "hash": "c0fd3d0e67a103e95921da5fad561616e0fe98645d5c6003c409d2908c3f2609f63fbf31483c0eca81fa5505e301b834", "media_type": "video/mp4", "name": "why-most-resolutions-fail-how.mp4", "sd_hash": "8179cca38f8a9cdabdddc8700fc55c03c48efeeef4335e52e674d44f69702ad095781714f8f4e750c7d7d52df50043e3", "size": "118942137" }, "stream_type": "video", "tags": [ "learning", "science", "2020", "achieve", "diet", "eat better", "exercise", "goals", "lose weight", "new year", "new years resolutions", "objectives", "plan", "planning", "resolution", "resolutions", "success", "veritasium", "education" ], "thumbnail": { "url": "https://thumbnails.lbry.com/Pm9CQn07OjU" }, "title": "Why Most Resolutions Fail & How To Succeed", "video": { "duration": 619, "height": 960, "width": 1920 } }, "value_type": "stream" }, { "address": "bNb4ZrGrsUZSn3QFzqhBStkdxjA7RBJxxw", "amount": "0.005", "canonical_url": "lbry://@veritasium#f/how-to-slow-aging-and-even-reverse-it#2", "claim_id": "216b94e4a8f6364c121c2cfc0a6e4dad1e5f9b40", "claim_op": "update", "confirmations": 97414, "height": 696289, "is_channel_signature_valid": true, "meta": { "activation_height": 682677, "creation_height": 682677, "creation_timestamp": 1576354027, "effective_amount": "688.605", "expiration_height": 2785077, "is_controlling": true, "reposted": 6, "support_amount": "688.6", "take_over_height": 682677, "trending_global": 0.0, "trending_group": 0, "trending_local": 0.0, "trending_mixed": 0.00035349890822544694 }, "name": "how-to-slow-aging-and-even-reverse-it", "normalized_name": "how-to-slow-aging-and-even-reverse-it", "nout": 0, "permanent_url": "lbry://how-to-slow-aging-and-even-reverse-it#216b94e4a8f6364c121c2cfc0a6e4dad1e5f9b40", "short_url": "lbry://how-to-slow-aging-and-even-reverse-it#2", "signing_channel": { "address": "bNb4ZrGrsUZSn3QFzqhBStkdxjA7RBJxxw", "amount": "0.005", "canonical_url": "lbry://@veritasium#f", "claim_id": "fb364ef587872515f545a5b4b3182b58073f230f", "claim_op": "update", "confirmations": 97413, "has_signing_key": false, "height": 696290, "meta": { "activation_height": 549756, "claims_in_channel": 289, "creation_height": 549756, "creation_timestamp": 1555015523, "effective_amount": "263905.380631", "expiration_height": 2652156, "is_controlling": true, "reposted": 0, "support_amount": "263905.375631", "take_over_height": 606290, "trending_global": 0.0, "trending_group": 0, "trending_local": 0.0, "trending_mixed": 4.3770786106733794e-08 }, "name": "@veritasium", "normalized_name": "@veritasium", "nout": 0, "permanent_url": "lbry://@veritasium#fb364ef587872515f545a5b4b3182b58073f230f", "short_url": "lbry://@veritasium#f", "timestamp": 1578536238, "txid": "07be6a81bc3ac539284f030b2a353b64ed277ed0ea1916456293217b74460b87", "type": "claim", "value": { "cover": { "url": "https://thumbnails.lbry.com/banner-UCHnyfMqiRRG1u-2MsSQLbXA" }, "description": "An element of truth - videos about science, education, and anything else I find interesting.", "locations": [ { "country": "US" } ], "public_key": "3056301006072a8648ce3d020106052b8104000a0342000490e4b9181b040c84274d2680c8ab402593610f5102fc9b83c8657bb8b209da2a3d3ba6058083a5195a9bca7ab84737032f050a32d8173af4b00f1a379404aea5", "public_key_id": "bRbG67Kpr8bANiqZGm4LB3dqgcMC3Q5awj", "tags": [ "learning", "science" ], "thumbnail": { "url": "https://thumbnails.lbry.com/UCHnyfMqiRRG1u-2MsSQLbXA" }, "title": "Veritasium" }, "value_type": "channel" }, "timestamp": 1578536058, "txid": "75d0e7fa54e6407d8d99f6563185c540e3ffe26958fa3b43d523fb613b8d2308", "type": "claim", "value": { "description": "Scientists like Prof Sinclair have evidence of speeding up, slowing, and even reversing aging. \nThanks to LastPass for sponsoring this video. Click here to start using LastPass: https://ve42.co/VeLP\n\nWhat causes aging? According to Professor David Sinclair, it is a loss of information in our epigenome, the system of proteins like histones and chemical markers like methylation that turn on and off genes. Epigenetics allow different cell types to perform their specific functions - they are what differentiate a brain cell from a skin cell. Our DNA is constantly getting broken, by cosmic rays, UV radiation, free radicals, x-rays and regular cell division etc. When our cells repair that damage, the epigenome is not perfectly reset. And hence over time, noise accumulates in our epigenome. Our cells no longer perform their functions well. \n\nTo counter this decline, we can activate the body's own defenses against aging by stressing the body. Eat less, eat less protein, engage in intense exercise, experience uncomfortable cold. When the body senses existential threats it triggers longevity genes, which attempt to maintain the body to ensure its survival until good times return. This may be the evolutionary legacy of early bacteria, which established these two modes of living (repair and protect vs grow and reproduce). Scientists are uncovering ways to mimic stresses on the body without the discomfort of fasting. Molecules like NMN also trigger sirtuins to monitor and repair the epigenome. This may slow aging.\n\nReversing aging requires an epigenetic reset, which may be possible using Yamanaka factors. These four factors can revert an adult cell into a pluripotent stem cell. Prof. Sinclair used three of the four factors to reverse aging in the retinal cells of old mice. He found they could see again after the treatment.\n\nSpecial thanks to:\nProfessor David Sinclair, check out his book \"Lifespan: Why We Age & Why We Don't Have To\"\nAssistant Professor David Gold\nNoemie Sierra (for polyp images)\nGenepool Productions for telomere animations from Immortal: https://ve42.co/immortal\nEpigenetics animations (DNA, histones, methylation etc) courtesy of: http://wehi.tv\nAnimation: Etsuko Uno\nArt and Technical Direction: Drew Berry\nSound Design: Francois Tetaz & Emma Bortignon\nScientific Consultation: Marnie Blewitt\nCourtesy of Walter and Eliza Hall Institute of Medical Research\n\nFilming, editing and animation by Jonny Hyman and Derek Muller\n\nMusic from https://epidemicsound.com \"Clearer Views\" \"Innovations\" \"A Sound Foundation\" \"Seaweed\"\nAdditional music by Kevin MacLeod from https://incompetech.com \"Marty Gots a Plan\"\n...\nhttps://www.youtube.com/watch?v=QRt7LjqJ45k", "languages": [ "en" ], "license": "Copyrighted (contact publisher)", "release_time": "1576335605", "source": { "hash": "1b86a170f4e1aa74ae487bb0fcaae5a35c544a4c958477eb42fa7dfdf8723d6911f3ee5844a62b83924f3552683eda82", "media_type": "video/mp4", "name": "how-to-slow-aging-and-even.mp4", "sd_hash": "9ad663765c38bf8a9fadfbdb7aa67e359419c67acea96d4c91fa5c0531d7ae1892e46549d8df1eadad1c12ed5b8a137e", "size": "303248146" }, "stream_type": "video", "tags": [ "learning", "science", "aging", "delete account mobogram", "dna", "epigenetics", "generate password", "genome", "how secure is my password", "immortality", "laspass", "last password", "lastpas", "lastpass", "lastpass chrome", "lastpass download", "lastpass login", "lastpass premium", "lastpass premium features", "longevity", "password", "password generator", "password manager", "random password generator", "recover", "veritasium", "young", "education" ], "thumbnail": { "url": "https://thumbnails.lbry.com/QRt7LjqJ45k" }, "title": "How to Slow Aging (and even reverse it)", "video": { "duration": 1269, "height": 1012, "width": 1920 } }, "value_type": "stream" }, { "address": "bNb4ZrGrsUZSn3QFzqhBStkdxjA7RBJxxw", "amount": "0.005", "canonical_url": "lbry://@veritasium#f/the-science-of-the-butterfly-effect#7", "claim_id": "71693d600e125e481df7bcc7eb3438f165eef0c7", "claim_op": "update", "confirmations": 97414, "height": 696289, "is_channel_signature_valid": true, "meta": { "activation_height": 678576, "creation_height": 678576, "creation_timestamp": 1575697452, "effective_amount": "508.105", "expiration_height": 2780976, "is_controlling": true, "reposted": 9, "support_amount": "508.1", "take_over_height": 678576, "trending_global": 0.0, "trending_group": 0, "trending_local": 0.0, "trending_mixed": 0.00014118975377641618 }, "name": "the-science-of-the-butterfly-effect", "normalized_name": "the-science-of-the-butterfly-effect", "nout": 0, "permanent_url": "lbry://the-science-of-the-butterfly-effect#71693d600e125e481df7bcc7eb3438f165eef0c7", "short_url": "lbry://the-science-of-the-butterfly-effect#7", "signing_channel": { "address": "bNb4ZrGrsUZSn3QFzqhBStkdxjA7RBJxxw", "amount": "0.005", "canonical_url": "lbry://@veritasium#f", "claim_id": "fb364ef587872515f545a5b4b3182b58073f230f", "claim_op": "update", "confirmations": 97413, "has_signing_key": false, "height": 696290, "meta": { "activation_height": 549756, "claims_in_channel": 289, "creation_height": 549756, "creation_timestamp": 1555015523, "effective_amount": "263905.380631", "expiration_height": 2652156, "is_controlling": true, "reposted": 0, "support_amount": "263905.375631", "take_over_height": 606290, "trending_global": 0.0, "trending_group": 0, "trending_local": 0.0, "trending_mixed": 4.3770786106733794e-08 }, "name": "@veritasium", "normalized_name": "@veritasium", "nout": 0, "permanent_url": "lbry://@veritasium#fb364ef587872515f545a5b4b3182b58073f230f", "short_url": "lbry://@veritasium#f", "timestamp": 1578536238, "txid": "07be6a81bc3ac539284f030b2a353b64ed277ed0ea1916456293217b74460b87", "type": "claim", "value": { "cover": { "url": "https://thumbnails.lbry.com/banner-UCHnyfMqiRRG1u-2MsSQLbXA" }, "description": "An element of truth - videos about science, education, and anything else I find interesting.", "locations": [ { "country": "US" } ], "public_key": "3056301006072a8648ce3d020106052b8104000a0342000490e4b9181b040c84274d2680c8ab402593610f5102fc9b83c8657bb8b209da2a3d3ba6058083a5195a9bca7ab84737032f050a32d8173af4b00f1a379404aea5", "public_key_id": "bRbG67Kpr8bANiqZGm4LB3dqgcMC3Q5awj", "tags": [ "learning", "science" ], "thumbnail": { "url": "https://thumbnails.lbry.com/UCHnyfMqiRRG1u-2MsSQLbXA" }, "title": "Veritasium" }, "value_type": "channel" }, "timestamp": 1578536058, "txid": "6d44c6c463180a3395e15d1805eb433cbf5bdcde45645901f7682361dc4a7060", "type": "claim", "value": { "description": "Chaos theory means deterministic systems can be unpredictable. Thanks to LastPass for sponsoring this video. Click here to start using LastPass: https://ve42.co/VeLP \nAnimations by Prof. Robert Ghrist: https://ve42.co/Ghrist\n\nWant to know more about chaos theory and non-linear dynamical systems? Check out: https://ve42.co/chaos-math\n\nButterfly footage courtesy of Phil Torres and The Jungle Diaries: https://ve42.co/monarch\nSolar system, 3-body and printout animations by Jonny Hyman\nSpecial thanks to Prof. Mason Porter at UCLA who I interviewed for this video.\n\nI have long wanted to make a video about chaos, ever since reading James Gleick's fantastic book, Chaos. I hope this video gives an idea of phase space - a picture of dynamical systems in which each point completely represents the state of the system. For a pendulum, phase space is only 2-dimensional and you can get orbits (in the case of an undamped pendulum) or an inward spiral (in the case of a pendulum with friction). For the Lorenz equations we need three dimensions to show the phase space. The attractor you find for these equations is said to be strange and chaotic because there is no loop, only infinite curves that never intersect. This explains why the motion is so unpredictable - two different initial conditions that are very close together can end up arbitrarily far apart.\n\nMusic from https://epidemicsound.com \"The Longest Rest\" \"A Sound Foundation\" \"Seaweed\"\n...\nhttps://www.youtube.com/watch?v=fDek6cYijxI", "languages": [ "en" ], "license": "Copyrighted (contact publisher)", "release_time": "1575659219", "source": { "hash": "4af52b32108bef5cfea747d84a220839fedbe896cd73c3c962611e5a98c000bf70728557e2a42aba491947c4084715e4", "media_type": "video/mp4", "name": "the-science-of-the-butterfly.mp4", "sd_hash": "06c539d106c749b284b3e389e75608f63462ad4f66c6215832e881df9f12ce53962ce748e1cf9a9e33d640105beeb60b", "size": "155824923" }, "stream_type": "video", "tags": [ "learning", "science", "attractor", "butterfly", "butterfly effect", "chaos", "chaos theory", "chaotic", "delete account mobogram", "dynamics", "generate password", "initial conditions", "laspass", "last password", "lastpas", "lastpass", "lastpass chrome", "lastpass download", "lastpass login", "lastpass premium", "lastpass premium features", "lorenz", "non-linear", "password", "password generator", "password manager", "pendulum", "phase space", "random password generator", "recover", "sensitive dependence", "theory", "tornado", "veritasium", "education" ], "thumbnail": { "url": "https://thumbnails.lbry.com/fDek6cYijxI" }, "title": "The Science of the Butterfly Effect \ud83e\udd8b", "video": { "duration": 770, "height": 1012, "width": 1920 } }, "value_type": "stream" }, { "address": "bNb4ZrGrsUZSn3QFzqhBStkdxjA7RBJxxw", "amount": "0.005", "canonical_url": "lbry://@veritasium#f/3-perplexing-physics-problems#1", "claim_id": "17610df547396567ca5063ce8701f53592601863", "claim_op": "update", "confirmations": 97413, "height": 696290, "is_channel_signature_valid": true, "meta": { "activation_height": 669918, "creation_height": 669918, "creation_timestamp": 1574311366, "effective_amount": "274.705", "expiration_height": 2772318, "is_controlling": true, "reposted": 2, "support_amount": "274.7", "take_over_height": 669918, "trending_global": 0.0, "trending_group": 0, "trending_local": 0.0, "trending_mixed": 0.0 }, "name": "3-perplexing-physics-problems", "normalized_name": "3-perplexing-physics-problems", "nout": 0, "permanent_url": "lbry://3-perplexing-physics-problems#17610df547396567ca5063ce8701f53592601863", "short_url": "lbry://3-perplexing-physics-problems#1", "signing_channel": { "address": "bNb4ZrGrsUZSn3QFzqhBStkdxjA7RBJxxw", "amount": "0.005", "canonical_url": "lbry://@veritasium#f", "claim_id": "fb364ef587872515f545a5b4b3182b58073f230f", "claim_op": "update", "confirmations": 97413, "has_signing_key": false, "height": 696290, "meta": { "activation_height": 549756, "claims_in_channel": 289, "creation_height": 549756, "creation_timestamp": 1555015523, "effective_amount": "263905.380631", "expiration_height": 2652156, "is_controlling": true, "reposted": 0, "support_amount": "263905.375631", "take_over_height": 606290, "trending_global": 0.0, "trending_group": 0, "trending_local": 0.0, "trending_mixed": 4.3770786106733794e-08 }, "name": "@veritasium", "normalized_name": "@veritasium", "nout": 0, "permanent_url": "lbry://@veritasium#fb364ef587872515f545a5b4b3182b58073f230f", "short_url": "lbry://@veritasium#f", "timestamp": 1578536238, "txid": "07be6a81bc3ac539284f030b2a353b64ed277ed0ea1916456293217b74460b87", "type": "claim", "value": { "cover": { "url": "https://thumbnails.lbry.com/banner-UCHnyfMqiRRG1u-2MsSQLbXA" }, "description": "An element of truth - videos about science, education, and anything else I find interesting.", "locations": [ { "country": "US" } ], "public_key": "3056301006072a8648ce3d020106052b8104000a0342000490e4b9181b040c84274d2680c8ab402593610f5102fc9b83c8657bb8b209da2a3d3ba6058083a5195a9bca7ab84737032f050a32d8173af4b00f1a379404aea5", "public_key_id": "bRbG67Kpr8bANiqZGm4LB3dqgcMC3Q5awj", "tags": [ "learning", "science" ], "thumbnail": { "url": "https://thumbnails.lbry.com/UCHnyfMqiRRG1u-2MsSQLbXA" }, "title": "Veritasium" }, "value_type": "channel" }, "timestamp": 1578536238, "txid": "b82ea012c1f63a4479989832b75ae43609c57cfb27efcd8fbd4c9be1f76b3dec", "type": "claim", "value": { "description": "Why does shaken soda explode? Does ice melt first in fresh or salt water?\nThank you Squarespace for sponsoring this video. Go to https://squarespace.com to save 10% off your first purchase of a website or domain using code: VERITASIUM\n\nThis video features experiments that have been shown to me by science teachers over the years. Does ice melt fast in salt water or fresh water was an experiment introduced to me at the Utah Science Teachers' conference. The ring of metal over a chain demo came from a teachers event in Florida. The idea shaking a carbonated drink increases pressure came from an email.\n\nSpecial thanks to Petr Lebedev for building the pressure gauge.\n\nLinks to literature are below:\nVictims of the pop bottle, by Ted Willhoft. New Scientist, 21 August 1986 p.28\n\nCarbonation speculation\nThe Physics Teacher 30, 173 (1992); https://doi.org/10.1119/1.2343501\n\nAgitation solution\nThe Physics Teacher 30, 325 (1992); https://doi.org/10.1119/1.2343556\n\nFilmed by Cristian Carretero, Jordan Schnabel, Jonny Hyman, and Raquel Nuno\n\nMusic from https://epidemicsound.com \"Seaweed\" \"Quietly Tense\" \"Mind Shift\" \"Observations\"\n...\nhttps://www.youtube.com/watch?v=K-Fc08X56R0", "languages": [ "en" ], "license": "Copyrighted (contact publisher)", "release_time": "1574283256", "source": { "hash": "4a9bbcb30810c7dcc2835457f6652922201e7c0fa3881441807ad3f0d494337440ee193b3676e3184b941148b85aa459", "media_type": "video/mp4", "name": "3-perplexing-physics-problems.mp4", "sd_hash": "c813ce50572cf9774d5d110a466bcc88aeda783fd5f29a74c3e6893052f119e7d25f5adc072ccaafa5b38d683c1a02b5", "size": "192816562" }, "stream_type": "video", "tags": [ "learning", "nature", "science", "carbonated", "chain", "drink", "experiment", "experiments", "explode", "fresh", "ice", "melt", "perplexing", "problems", "ring", "salt", "salty", "shake", "soda", "squarespace ad", "squarespace blog", "squarespace ecommerce", "squarespace online store", "squarespace portfolio", "squarespace seo", "squarespace website", "veritasium", "water", "education" ], "thumbnail": { "url": "https://thumbnails.lbry.com/K-Fc08X56R0" }, "title": "3 Perplexing Physics Problems", "video": { "duration": 839, "height": 1012, "width": 1920 } }, "value_type": "stream" }, { "address": "bNb4ZrGrsUZSn3QFzqhBStkdxjA7RBJxxw", "amount": "0.005", "canonical_url": "lbry://@veritasium#f/why-trees-are-out-to-get-you#a", "claim_id": "a722762b0507ef8baf1341fe98186eaeea012235", "claim_op": "update", "confirmations": 97414, "height": 696289, "is_channel_signature_valid": true, "meta": { "activation_height": 655909, "creation_height": 655909, "creation_timestamp": 1572056767, "effective_amount": "355.505", "expiration_height": 2758309, "is_controlling": true, "reposted": 2, "support_amount": "355.5", "take_over_height": 655909, "trending_global": 0.0, "trending_group": 0, "trending_local": 0.0, "trending_mixed": 0.0 }, "name": "why-trees-are-out-to-get-you", "normalized_name": "why-trees-are-out-to-get-you", "nout": 0, "permanent_url": "lbry://why-trees-are-out-to-get-you#a722762b0507ef8baf1341fe98186eaeea012235", "short_url": "lbry://why-trees-are-out-to-get-you#a", "signing_channel": { "address": "bNb4ZrGrsUZSn3QFzqhBStkdxjA7RBJxxw", "amount": "0.005", "canonical_url": "lbry://@veritasium#f", "claim_id": "fb364ef587872515f545a5b4b3182b58073f230f", "claim_op": "update", "confirmations": 97413, "has_signing_key": false, "height": 696290, "meta": { "activation_height": 549756, "claims_in_channel": 289, "creation_height": 549756, "creation_timestamp": 1555015523, "effective_amount": "263905.380631", "expiration_height": 2652156, "is_controlling": true, "reposted": 0, "support_amount": "263905.375631", "take_over_height": 606290, "trending_global": 0.0, "trending_group": 0, "trending_local": 0.0, "trending_mixed": 4.3770786106733794e-08 }, "name": "@veritasium", "normalized_name": "@veritasium", "nout": 0, "permanent_url": "lbry://@veritasium#fb364ef587872515f545a5b4b3182b58073f230f", "short_url": "lbry://@veritasium#f", "timestamp": 1578536238, "txid": "07be6a81bc3ac539284f030b2a353b64ed277ed0ea1916456293217b74460b87", "type": "claim", "value": { "cover": { "url": "https://thumbnails.lbry.com/banner-UCHnyfMqiRRG1u-2MsSQLbXA" }, "description": "An element of truth - videos about science, education, and anything else I find interesting.", "locations": [ { "country": "US" } ], "public_key": "3056301006072a8648ce3d020106052b8104000a0342000490e4b9181b040c84274d2680c8ab402593610f5102fc9b83c8657bb8b209da2a3d3ba6058083a5195a9bca7ab84737032f050a32d8173af4b00f1a379404aea5", "public_key_id": "bRbG67Kpr8bANiqZGm4LB3dqgcMC3Q5awj", "tags": [ "learning", "science" ], "thumbnail": { "url": "https://thumbnails.lbry.com/UCHnyfMqiRRG1u-2MsSQLbXA" }, "title": "Veritasium" }, "value_type": "channel" }, "timestamp": 1578536058, "txid": "264d8a8a386716d3289880974221bcee5063477b3c60819ffdce9ee9c868f0e2", "type": "claim", "value": { "description": "Want to help plant 20M trees by 2020? Go to https://teamtrees.org #teamtrees\nHuge thanks to all the YouTubers who organized this. My apologies for the repost.\nThese videos are from 2012 so my interest in trees goes back a long ways. I think these videos discuss two of the most interesting and amazing facts about our leafy friends: they are made mostly of CO2 (which comes from us breathing out amongst other sources) and they can transport water up a tube higher than any we can currently manufacture. So trees are out to get you. But we do much worse to them so we owe it to them to plant some more. 20 mil is a good start.\n...\nhttps://www.youtube.com/watch?v=-PWMQR59M68", "license": "Copyrighted (contact publisher)", "release_time": "1572030000", "source": { "hash": "b13134ca1710b82dc1f3981481afc93a8ad1258822576a7639b8b725b7647d05652ce64096146639b52a08b523ee273c", "media_type": "video/mp4", "name": "why-trees-are-out-to-get-you.mp4", "sd_hash": "f5eb7f6c517a9da67c886e47848a0b16c295b6aea0e430ba7621c85409f4fbf0720597d737c707c3e698956a179cc1bd", "size": "214324455" }, "stream_type": "video", "tags": [ "learning", "nature", "science", "team trees", "teamtrees", "tree", "trees", "education" ], "thumbnail": { "url": "https://thumbnails.lbry.com/-PWMQR59M68" }, "title": "Why Trees Are Out to Get You", "video": { "duration": 607, "height": 1080, "width": 1920 } }, "value_type": "stream" }, { "address": "bNb4ZrGrsUZSn3QFzqhBStkdxjA7RBJxxw", "amount": "0.005", "canonical_url": "lbry://@veritasium#f/engineering-with-origami#6", "claim_id": "64be0e1b40d5fd023eefcc9f5af31addf1dfeecb", "claim_op": "update", "confirmations": 97413, "height": 696290, "is_channel_signature_valid": true, "meta": { "activation_height": 644574, "creation_height": 644574, "creation_timestamp": 1570236785, "effective_amount": "152.005", "expiration_height": 2746974, "is_controlling": true, "reposted": 3, "support_amount": "152.0", "take_over_height": 644574, "trending_global": 0.0, "trending_group": 0, "trending_local": 0.0, "trending_mixed": 0.010505221784114838 }, "name": "engineering-with-origami", "normalized_name": "engineering-with-origami", "nout": 0, "permanent_url": "lbry://engineering-with-origami#64be0e1b40d5fd023eefcc9f5af31addf1dfeecb", "short_url": "lbry://engineering-with-origami#6", "signing_channel": { "address": "bNb4ZrGrsUZSn3QFzqhBStkdxjA7RBJxxw", "amount": "0.005", "canonical_url": "lbry://@veritasium#f", "claim_id": "fb364ef587872515f545a5b4b3182b58073f230f", "claim_op": "update", "confirmations": 97413, "has_signing_key": false, "height": 696290, "meta": { "activation_height": 549756, "claims_in_channel": 289, "creation_height": 549756, "creation_timestamp": 1555015523, "effective_amount": "263905.380631", "expiration_height": 2652156, "is_controlling": true, "reposted": 0, "support_amount": "263905.375631", "take_over_height": 606290, "trending_global": 0.0, "trending_group": 0, "trending_local": 0.0, "trending_mixed": 4.3770786106733794e-08 }, "name": "@veritasium", "normalized_name": "@veritasium", "nout": 0, "permanent_url": "lbry://@veritasium#fb364ef587872515f545a5b4b3182b58073f230f", "short_url": "lbry://@veritasium#f", "timestamp": 1578536238, "txid": "07be6a81bc3ac539284f030b2a353b64ed277ed0ea1916456293217b74460b87", "type": "claim", "value": { "cover": { "url": "https://thumbnails.lbry.com/banner-UCHnyfMqiRRG1u-2MsSQLbXA" }, "description": "An element of truth - videos about science, education, and anything else I find interesting.", "locations": [ { "country": "US" } ], "public_key": "3056301006072a8648ce3d020106052b8104000a0342000490e4b9181b040c84274d2680c8ab402593610f5102fc9b83c8657bb8b209da2a3d3ba6058083a5195a9bca7ab84737032f050a32d8173af4b00f1a379404aea5", "public_key_id": "bRbG67Kpr8bANiqZGm4LB3dqgcMC3Q5awj", "tags": [ "learning", "science" ], "thumbnail": { "url": "https://thumbnails.lbry.com/UCHnyfMqiRRG1u-2MsSQLbXA" }, "title": "Veritasium" }, "value_type": "channel" }, "timestamp": 1578536238, "txid": "89e5eae8b14245f8a1ec2787ee83ed2a8081559eae8ab4ede4cdc4ff3f2accba", "type": "claim", "value": { "description": "Origami is inspiring a plethora of new engineering designs. Try yourself: https://ve42.co/Origami\nThanks Audible! Start listening with a 30-day trial and your first audiobook, plus two Audible Originals free when you go to https://audible.com/veritasium or text veritasium to 500500\n\nHuge thanks to:\nDr. Robert Lang https://langorigami.com\nProf. Larry Howell https://www.compliantmechanisms.byu.edu/\n\nOn first glance it's surprising that origami -- a centuries old art of folding paper to achieve particular aesthetics -- is applicable to engineering. But upon closer consideration there are a lot of reasons methods developed for paper folding are also applicable to engineering: origami allows you to take a flat sheet of material and convert it to almost any shape only by folding. Plus for large flat structures, origami provides a way of shrinking dimensions while ensuring simply deployment - this is particularly useful for solar arrays in space applications. Furthermore, motions designed to take advantage of the flexibility of paper can also be used to form compliant mechanisms for engineering like the kaleidocycle. Since the principles of origami are scalable, mechanisms can also be dramatically miniaturized.\n\nSome of the work shown is based upon work supported by the National Science Foundation and the Air Force Office of Scientific Research under Grant No. EFRI-ODISSEI-1240417. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.\n\nSpecial thanks to Patreon supporters:\nAlfred Wallace, Arjun Chakroborty, Bryan Baker, Chris Vargas, Chuck Lauer Vose, DALE HORNE, Donal Botkin, halyoav, James Knight, Jasper Xin, Joar Wandborg, Kevin Beavers, kkm, Leah Howard, Lyvann Ferrusca, Michael Krugman, Noel Braganza, Pindex, Ron Neal, Sam Lutfi, Stan Presolski, Tige Thorman\n\nEdited by\nJonny Hyman, Isaac Frame, and Derek Muller\n\nMusic by\nJonny Hyman\n...\nhttps://www.youtube.com/watch?v=ThwuT3_AG6w", "languages": [ "en" ], "license": "Copyrighted (contact publisher)", "release_time": "1570223890", "source": { "hash": "5151ba436e868c47e25311263c77b569a63808328fde1146dcd04ce22d66ffa9ecc27879574941240761959b02599cc3", "media_type": "video/mp4", "name": "engineering-with-origami.mp4", "sd_hash": "c1fbb083834508adcdf86d49dafd77f2e185600545e1e082b75c8685447f9d928b2d408424c4732a6e1dc0ca83492c34", "size": "421327528" }, "stream_type": "video", "tags": [ "learning", "nature", "science", "cactus", "compliant mechanism", "crane", "crease pattern", "engineering", "fold", "mathematics", "mechanism", "origami", "paper", "physics", "solar panels", "space", "veritasium", "education" ], "thumbnail": { "url": "https://thumbnails.lbry.com/ThwuT3_AG6w" }, "title": "Engineering with Origami", "video": { "duration": 1101, "height": 1080, "width": 1920 } }, "value_type": "stream" }, { "address": "bNb4ZrGrsUZSn3QFzqhBStkdxjA7RBJxxw", "amount": "0.005", "canonical_url": "lbry://@veritasium#f/the-bizarre-behavior-of-rotating-bodies#a", "claim_id": "a9999f96700440e49b8275ed655a772c547ec5fb", "claim_op": "update", "confirmations": 97413, "height": 696290, "is_channel_signature_valid": true, "meta": { "activation_height": 636446, "creation_height": 636446, "creation_timestamp": 1568937420, "effective_amount": "127.505", "expiration_height": 2738846, "is_controlling": true, "reposted": 2, "support_amount": "127.5", "take_over_height": 636446, "trending_global": 0.0, "trending_group": 0, "trending_local": 0.0, "trending_mixed": 0.0 }, "name": "the-bizarre-behavior-of-rotating-bodies", "normalized_name": "the-bizarre-behavior-of-rotating-bodies", "nout": 0, "permanent_url": "lbry://the-bizarre-behavior-of-rotating-bodies#a9999f96700440e49b8275ed655a772c547ec5fb", "short_url": "lbry://the-bizarre-behavior-of-rotating-bodies#a", "signing_channel": { "address": "bNb4ZrGrsUZSn3QFzqhBStkdxjA7RBJxxw", "amount": "0.005", "canonical_url": "lbry://@veritasium#f", "claim_id": "fb364ef587872515f545a5b4b3182b58073f230f", "claim_op": "update", "confirmations": 97413, "has_signing_key": false, "height": 696290, "meta": { "activation_height": 549756, "claims_in_channel": 289, "creation_height": 549756, "creation_timestamp": 1555015523, "effective_amount": "263905.380631", "expiration_height": 2652156, "is_controlling": true, "reposted": 0, "support_amount": "263905.375631", "take_over_height": 606290, "trending_global": 0.0, "trending_group": 0, "trending_local": 0.0, "trending_mixed": 4.3770786106733794e-08 }, "name": "@veritasium", "normalized_name": "@veritasium", "nout": 0, "permanent_url": "lbry://@veritasium#fb364ef587872515f545a5b4b3182b58073f230f", "short_url": "lbry://@veritasium#f", "timestamp": 1578536238, "txid": "07be6a81bc3ac539284f030b2a353b64ed277ed0ea1916456293217b74460b87", "type": "claim", "value": { "cover": { "url": "https://thumbnails.lbry.com/banner-UCHnyfMqiRRG1u-2MsSQLbXA" }, "description": "An element of truth - videos about science, education, and anything else I find interesting.", "locations": [ { "country": "US" } ], "public_key": "3056301006072a8648ce3d020106052b8104000a0342000490e4b9181b040c84274d2680c8ab402593610f5102fc9b83c8657bb8b209da2a3d3ba6058083a5195a9bca7ab84737032f050a32d8173af4b00f1a379404aea5", "public_key_id": "bRbG67Kpr8bANiqZGm4LB3dqgcMC3Q5awj", "tags": [ "learning", "science" ], "thumbnail": { "url": "https://thumbnails.lbry.com/UCHnyfMqiRRG1u-2MsSQLbXA" }, "title": "Veritasium" }, "value_type": "channel" }, "timestamp": 1578536238, "txid": "fa5a957e449cd4681bf6ce1ea84f589a30fe88a345646fd8b7dc1c49ef0e5ed2", "type": "claim", "value": { "description": "Spinning objects have strange instabilities known as The Dzhanibekov Effect or Tennis Racket Theorem - this video offers an intuitive explanation.\nPart of this video was sponsored by LastPass, click here to find out more: https://ve42.co/LP\n\nReferences:\nProf. Terry Tao's Math Overflow Explanation: https://ve42.co/Tao\n\nThe Twisting Tennis Racket\nAshbaugh, M.S., Chicone, C.C. & Cushman, R.H. J Dyn Diff Equat (1991) 3: 67. https://doi.org/10.1007/BF01049489\n\nJanibekov\u2019s effect and the laws of mechanics\nPetrov, A.G. & Volodin, S.E. Dokl. Phys. (2013) 58: 349. https://doi.org/10.1134/S1028335813080041\n\nTumbling Asteroids\nPrave et al. https://doi.org/10.1016/j.icarus.2004.07.021\n\nThe Exact Computation of the Free Rigid Body Motion and Its Use in Splitting Methods\nSIAM J. Sci. Comput., 30(4), 2084\u20132112\nE. Celledoni, F. Fass\u00f2, N. S\u00e4fstr\u00f6m, and A. Zanna\nhttps://doi.org/10.1137/070704393\n\nAnimations by Iv\u00e1n Tello and Isaac Frame\n\nSpecial thanks to people who discussed this video with me:\nAstronaut Don Pettit\nHenry Reich of MinutePhysics\nGrant Sanderson of 3blue1brown\nVert Dider (Russian YouTube channel)\n\nBelow is a further discussion by Henry Reich that I think helps summarize why axes 1 and 3 are generally stable while axis 2 is not:\n\nIn general, you might imagine that because the object can rotate in a bunch of different directions, the components of energy and momentum could be free to change while keeping the total momentum constant.\n\nHowever, in the case of axis 1, the kinetic energy is the highest possible for a given angular momentum, and in the case of axis 3, the kinetic energy is the lowest possible for a given angular momentum (which can be easily shown from conservation of energy and momentum equations, and is also fairly intuitive from the fact that kinetic energy is proportional to velocity squared, while momentum is proportional to velocity - so in the case of axis 1, the smaller masses will have to be spinning faster for a given momentum, and will thus have more energy, and vice versa for axis 3 where all the masses are spinning: the energy will be lowest). In fact, this is a strict inequality - if the energy is highest possible, there are no other possible combinations of momenta other than L2=L3=0, and vice versa for if the energy is the lowest possible.\n\nBecause of this, in the case of axis 1 the energy is so high that there simply aren't any other possible combinations of angular momentum components L1, L2 and L3 - the object would have to lose energy in order to spin differently. And in the case of axis 3, the energy is so low that there likewise is no way for the object to be rotating other than purely around axis 3 - it would have to gain energy. However, there's no such constraint for axis 2, since the energy is somewhere in bet\n...\nhttps://www.youtube.com/watch?v=1VPfZ_XzisU", "languages": [ "en" ], "license": "Copyrighted (contact publisher)", "release_time": "1568908215", "source": { "hash": "a68fef139f7536eb68da0617811b13a8749f6cfaab32dd74282fb5863a42f796dc9250b3ae13e3044de25a0984155b4c", "media_type": "video/mp4", "name": "the-bizarre-behavior-of.mp4", "sd_hash": "2461908b71c2608028f237dbda6edc3346e182494db089fe8c1e393f31d337985e4a0ac6adc2a9404ae3201e6cc161a7", "size": "153050582" }, "stream_type": "video", "tags": [ "learning", "nature", "science", "axis", "delete account mobogram", "flip", "generate password", "handle", "how secure is my password", "intermediate axis", "laspass", "last password", "lastpas", "lastpass", "lastpass chrome", "lastpass download", "lastpass login", "lastpass premium", "lastpass premium features", "password", "password generator", "password manager", "random password generator", "recover", "rotating", "rotation", "space", "spinning", "tennis racket", "theorem", "veritasium", "education" ], "thumbnail": { "url": "https://thumbnails.lbry.com/1VPfZ_XzisU" }, "title": "The Bizarre Behavior of Rotating Bodies, Explained", "video": { "duration": 888, "height": 720, "width": 1280 } }, "value_type": "stream" }, { "address": "bNb4ZrGrsUZSn3QFzqhBStkdxjA7RBJxxw", "amount": "0.005", "canonical_url": "lbry://@veritasium#f/does-planet-9-exist#3", "claim_id": "3137c50a7785bf1cb56cf383f04dfb1dedf5f972", "claim_op": "update", "confirmations": 97414, "height": 696289, "is_channel_signature_valid": true, "meta": { "activation_height": 633175, "creation_height": 633175, "creation_timestamp": 1568417788, "effective_amount": "179.205", "expiration_height": 2735575, "is_controlling": true, "reposted": 4, "support_amount": "179.2", "take_over_height": 633175, "trending_global": 0.0, "trending_group": 0, "trending_local": 0.0, "trending_mixed": 0.0 }, "name": "does-planet-9-exist", "normalized_name": "does-planet-9-exist", "nout": 0, "permanent_url": "lbry://does-planet-9-exist#3137c50a7785bf1cb56cf383f04dfb1dedf5f972", "short_url": "lbry://does-planet-9-exist#3", "signing_channel": { "address": "bNb4ZrGrsUZSn3QFzqhBStkdxjA7RBJxxw", "amount": "0.005", "canonical_url": "lbry://@veritasium#f", "claim_id": "fb364ef587872515f545a5b4b3182b58073f230f", "claim_op": "update", "confirmations": 97413, "has_signing_key": false, "height": 696290, "meta": { "activation_height": 549756, "claims_in_channel": 289, "creation_height": 549756, "creation_timestamp": 1555015523, "effective_amount": "263905.380631", "expiration_height": 2652156, "is_controlling": true, "reposted": 0, "support_amount": "263905.375631", "take_over_height": 606290, "trending_global": 0.0, "trending_group": 0, "trending_local": 0.0, "trending_mixed": 4.3770786106733794e-08 }, "name": "@veritasium", "normalized_name": "@veritasium", "nout": 0, "permanent_url": "lbry://@veritasium#fb364ef587872515f545a5b4b3182b58073f230f", "short_url": "lbry://@veritasium#f", "timestamp": 1578536238, "txid": "07be6a81bc3ac539284f030b2a353b64ed277ed0ea1916456293217b74460b87", "type": "claim", "value": { "cover": { "url": "https://thumbnails.lbry.com/banner-UCHnyfMqiRRG1u-2MsSQLbXA" }, "description": "An element of truth - videos about science, education, and anything else I find interesting.", "locations": [ { "country": "US" } ], "public_key": "3056301006072a8648ce3d020106052b8104000a0342000490e4b9181b040c84274d2680c8ab402593610f5102fc9b83c8657bb8b209da2a3d3ba6058083a5195a9bca7ab84737032f050a32d8173af4b00f1a379404aea5", "public_key_id": "bRbG67Kpr8bANiqZGm4LB3dqgcMC3Q5awj", "tags": [ "learning", "science" ], "thumbnail": { "url": "https://thumbnails.lbry.com/UCHnyfMqiRRG1u-2MsSQLbXA" }, "title": "Veritasium" }, "value_type": "channel" }, "timestamp": 1578536058, "txid": "ededcb41cb9b90b8a53a5725807062d136b753718f3f80baa9c32b49c156fbec", "type": "claim", "value": { "description": "A planet has been predicted to orbit the sun with a period of 10,000 years, a mass 5x that of Earth on a highly elliptical and inclined orbit. What evidence supports the existence of such a strange object at the edge of our solar system?\n\nHuge thanks to:\nProf. Konstantin Batygin, Caltech\nProf. David Jewitt, UCLA\n\nI had heard about Planet 9 for a long time but I wondered what sort of evidence could support the bold claim: a planet at the very limits of our ability to detect one, so far out that its period is over 60 times that of Neptune. The planet 9 hypothesis helps explain clustering of orbits of distant Kuiper belt objects. It also explains how some of these objects have highly inclined orbits - up to 90 degrees relative to the plane of the solar system. Some are orbiting in reverse. Plus their orbits are removed from the orbit of Neptune, the logical option for a body that could have ejected them out so far. The fact that the perihelion is so far out suggests another source of gravity was essential for their peculiar orbits.\n\nSpecial Thanks to Patreon Supporters:\nAlfred Wallace, Arjun Chakroborty, Bryan Baker, Chris Vargas, Chuck Lauer Vose, DALE HORNE, Donal Botkin, Eric Velazquez, halyoav, James Knight, Jasper Xin, Joar Wandborg, Kevin Beavers, kkm, Leah Howard, Lyvann Ferrusca, Michael Krugman, Mohammed Al Sahaf, Noel Braganza, Pindex, Ron Neal, Sam Lutfi, Stan Presolski, Tige Thorman\n\nMusic from http://epidemicsound.com \"Observations - From Now On\" \"Magnified XY\"\n...\nhttps://www.youtube.com/watch?v=pe83T9hISoY", "languages": [ "en" ], "license": "Copyrighted (contact publisher)", "release_time": "1568383666", "source": { "hash": "42361ec1623ee40a00f2e2091673095455e3963b75c65d1649d830dc977d28ab39235c71e65043807890200d35462686", "media_type": "video/mp4", "name": "does-planet-9-exist.mp4", "sd_hash": "55bbfced8d826228b27527b447221cf1445eeebac696b81352c1a312ac8256425ff299ab4738b7ce124a264523be55f2", "size": "252845508" }, "stream_type": "video", "tags": [ "learning", "science", "asteroid", "discovery", "evidence", "kuiper belt", "neptune", "ninth planet", "orbit", "planet", "planet 9", "planet x", "pluto", "solar system", "uranus", "veritasium", "education" ], "thumbnail": { "url": "https://thumbnails.lbry.com/pe83T9hISoY" }, "title": "Does Planet 9 Exist?", "video": { "duration": 980, "height": 720, "width": 1280 } }, "value_type": "stream" }, { "address": "bNb4ZrGrsUZSn3QFzqhBStkdxjA7RBJxxw", "amount": "0.005", "canonical_url": "lbry://@veritasium#f/flamethrower-vs-aerogel#a", "claim_id": "a9680839b41d25203633eba0b746a11e08e796fb", "claim_op": "update", "confirmations": 97414, "height": 696289, "is_channel_signature_valid": true, "meta": { "activation_height": 626126, "creation_height": 626126, "creation_timestamp": 1567291251, "effective_amount": "163.505", "expiration_height": 2728526, "is_controlling": true, "reposted": 0, "support_amount": "163.5", "take_over_height": 626126, "trending_global": 0.0, "trending_group": 0, "trending_local": 0.0, "trending_mixed": 0.0 }, "name": "flamethrower-vs-aerogel", "normalized_name": "flamethrower-vs-aerogel", "nout": 0, "permanent_url": "lbry://flamethrower-vs-aerogel#a9680839b41d25203633eba0b746a11e08e796fb", "short_url": "lbry://flamethrower-vs-aerogel#a", "signing_channel": { "address": "bNb4ZrGrsUZSn3QFzqhBStkdxjA7RBJxxw", "amount": "0.005", "canonical_url": "lbry://@veritasium#f", "claim_id": "fb364ef587872515f545a5b4b3182b58073f230f", "claim_op": "update", "confirmations": 97413, "has_signing_key": false, "height": 696290, "meta": { "activation_height": 549756, "claims_in_channel": 289, "creation_height": 549756, "creation_timestamp": 1555015523, "effective_amount": "263905.380631", "expiration_height": 2652156, "is_controlling": true, "reposted": 0, "support_amount": "263905.375631", "take_over_height": 606290, "trending_global": 0.0, "trending_group": 0, "trending_local": 0.0, "trending_mixed": 4.3770786106733794e-08 }, "name": "@veritasium", "normalized_name": "@veritasium", "nout": 0, "permanent_url": "lbry://@veritasium#fb364ef587872515f545a5b4b3182b58073f230f", "short_url": "lbry://@veritasium#f", "timestamp": 1578536238, "txid": "07be6a81bc3ac539284f030b2a353b64ed277ed0ea1916456293217b74460b87", "type": "claim", "value": { "cover": { "url": "https://thumbnails.lbry.com/banner-UCHnyfMqiRRG1u-2MsSQLbXA" }, "description": "An element of truth - videos about science, education, and anything else I find interesting.", "locations": [ { "country": "US" } ], "public_key": "3056301006072a8648ce3d020106052b8104000a0342000490e4b9181b040c84274d2680c8ab402593610f5102fc9b83c8657bb8b209da2a3d3ba6058083a5195a9bca7ab84737032f050a32d8173af4b00f1a379404aea5", "public_key_id": "bRbG67Kpr8bANiqZGm4LB3dqgcMC3Q5awj", "tags": [ "learning", "science" ], "thumbnail": { "url": "https://thumbnails.lbry.com/UCHnyfMqiRRG1u-2MsSQLbXA" }, "title": "Veritasium" }, "value_type": "channel" }, "timestamp": 1578536058, "txid": "bb27b3bcfab7f72e18cbc50d7c3a5dc0f1ee7ef81df72d8c98f1b588eeb04536", "type": "claim", "value": { "description": "*Technically 'not-a-flamethrower' vs aerogel, we applied a huge 2000\u00b0C flame to a large fiberglass blanket infused with silica aerogel - formerly the lightest solid (now that title is held by graphene aerogel).\n\nSpecial thanks to:\nAerogel Technologies: https://ve42.co/aerogeltech\nAspen Aerogels: https://ve42.co/aspen\nBen: @BenScho999999\nDr. Stephen Steiner and the Aerogel Technologies team\n\nThe footage of aerogel materials in cold environments was provided courtesy of Aspen Aerogels. Their product, cryogel, was shown to be flexible in liquid nitrogen while preventing cold burns to the hand. They are the manufacturer of the blanket used in the main portion of this video.\n\nThis is the finale of my three-part series on aerogel. I'll put links to the other parts below:\nWorld's Lightest Solid: https://youtu.be/AeJ9q45PfD0\nI Waterproofed Myself With Aerogel: https://youtu.be/GcdB5bFwio4\n\nHuge thanks to Patreon supporters:\nAlfred Wallace, Arjun Chakroborty, Bryan Baker, Chris Vargas, Chuck Lauer Vose, Dale Horne, Donal Botkin, Eric Velazquez, halyoav, James Knight, Jasper Xin, Joar Wandborg, Kevin Beavers, kkm, Leah Howard, Lyvann Ferrusca, Michael Krugman, Mohammed Al Sahaf, Noel Braganza, Philipp Volgger, Pindex, Ron Neal, Sam Lutfi, Stan Presolski, Tige Thorman\n\nThis is an educational video demonstrating scientific experiments performed by professionals. It should not be attempted by viewers.\n\nMusic from Epidemic Sound: http://epidemicsound.com \"Running Against the Clock\" \"Dangerous Forests\"\n...\nhttps://www.youtube.com/watch?v=qnOoDE9rj6w", "languages": [ "en" ], "license": "Copyrighted (contact publisher)", "release_time": "1567263617", "source": { "hash": "68278ed7441d496ac70057809674aac0b4d3a57586cf96d6e4012d0c7493d73b11a6c80f3d10c215629d34dcc399ac60", "media_type": "video/mp4", "name": "flamethrower-vs-aerogel.mp4", "sd_hash": "29b682df35d0e9aea3abba2f638ec37e31cb293336401252f2e91077d9b4c29bd00378ddb32b8c2db1b04e070d11c679", "size": "286139230" }, "stream_type": "video", "tags": [ "learning", "science", "weapons", "aerogel", "aspen aerogel", "blanket", "coating", "cryogenics", "fire", "flamethrower", "heat", "insulation", "insulator", "lightest", "liquid nitrogen", "protectant", "safety", "solid", "temperature", "veritasium", "education" ], "thumbnail": { "url": "https://thumbnails.lbry.com/qnOoDE9rj6w" }, "title": "Flamethrower* vs Aerogel", "video": { "duration": 800, "height": 1080, "width": 1920 } }, "value_type": "stream" }, { "address": "bNb4ZrGrsUZSn3QFzqhBStkdxjA7RBJxxw", "amount": "0.005", "canonical_url": "lbry://@veritasium#f/making-liquid-nitrogen-from-scratch#2", "claim_id": "22c237bc21745338978993f3bb0c8ab38c77847e", "claim_op": "update", "confirmations": 97413, "height": 696290, "is_channel_signature_valid": true, "meta": { "activation_height": 618055, "creation_height": 618055, "creation_timestamp": 1565989985, "effective_amount": "101.735", "expiration_height": 2720455, "is_controlling": true, "reposted": 0, "support_amount": "101.73", "take_over_height": 618055, "trending_global": 0.0, "trending_group": 0, "trending_local": 0.0, "trending_mixed": 2.2475669384002686 }, "name": "making-liquid-nitrogen-from-scratch", "normalized_name": "making-liquid-nitrogen-from-scratch", "nout": 0, "permanent_url": "lbry://making-liquid-nitrogen-from-scratch#22c237bc21745338978993f3bb0c8ab38c77847e", "short_url": "lbry://making-liquid-nitrogen-from-scratch#2", "signing_channel": { "address": "bNb4ZrGrsUZSn3QFzqhBStkdxjA7RBJxxw", "amount": "0.005", "canonical_url": "lbry://@veritasium#f", "claim_id": "fb364ef587872515f545a5b4b3182b58073f230f", "claim_op": "update", "confirmations": 97413, "has_signing_key": false, "height": 696290, "meta": { "activation_height": 549756, "claims_in_channel": 289, "creation_height": 549756, "creation_timestamp": 1555015523, "effective_amount": "263905.380631", "expiration_height": 2652156, "is_controlling": true, "reposted": 0, "support_amount": "263905.375631", "take_over_height": 606290, "trending_global": 0.0, "trending_group": 0, "trending_local": 0.0, "trending_mixed": 4.3770786106733794e-08 }, "name": "@veritasium", "normalized_name": "@veritasium", "nout": 0, "permanent_url": "lbry://@veritasium#fb364ef587872515f545a5b4b3182b58073f230f", "short_url": "lbry://@veritasium#f", "timestamp": 1578536238, "txid": "07be6a81bc3ac539284f030b2a353b64ed277ed0ea1916456293217b74460b87", "type": "claim", "value": { "cover": { "url": "https://thumbnails.lbry.com/banner-UCHnyfMqiRRG1u-2MsSQLbXA" }, "description": "An element of truth - videos about science, education, and anything else I find interesting.", "locations": [ { "country": "US" } ], "public_key": "3056301006072a8648ce3d020106052b8104000a0342000490e4b9181b040c84274d2680c8ab402593610f5102fc9b83c8657bb8b209da2a3d3ba6058083a5195a9bca7ab84737032f050a32d8173af4b00f1a379404aea5", "public_key_id": "bRbG67Kpr8bANiqZGm4LB3dqgcMC3Q5awj", "tags": [ "learning", "science" ], "thumbnail": { "url": "https://thumbnails.lbry.com/UCHnyfMqiRRG1u-2MsSQLbXA" }, "title": "Veritasium" }, "value_type": "channel" }, "timestamp": 1578536238, "txid": "46d9cb3c695aff8cc36c6f5987221502da88173c74843651901e1fd107091781", "type": "claim", "value": { "description": "I used a nitrogen membrane and Stirling cryocooler to liquefy nitrogen out of the air. For this video I partnered with Starbucks to celebrate their Nitro Cold Brew. Order one here: https://starbucks.app.link/derekmuller\n\nMaking liquid nitrogen is hard - in fact up until 150 years ago scientists doubted whether it was even possible to liquefy nitrogen. In 1823, At the royal institution in London, Michael Faraday first produced liquid chlorine, kind of accidentally by putting it under high pressure. He similarly liquefied ammonia.\n\nBorrowing a mixture from Thilorier in France, a combination of dry ice, snow and ether, he reached a temperature of -110C. By 1845 he used this mixture plus a hand pump to pressurize gases to liquefy all the known gases except six, which included oxygen and nitrogen. These became known as the \u201cpermanent\u201d gases.\n\nA French Physicist Aim\u00e9 compressed oxygen and nitrogen in tanks and then lowered them into the ocean over 1.6km deep, where the pressure got up to 200 atmospheres. Still the gases didn\u2019t liquefy.\n\nOnly at the end of 1877 were the first droplets of liquid oxygen and liquid nitrogen produced, by Cailletet in France. He first tried oxygen by compressing it up to 300 atmospheres, cooled to -30C, but that wasn't even enough to liquefy oxygen. But when he suddenly released the pressure, the expanding gas cooled, he estimated to -200C and he saw a mist and then droplets slide down the walls of his vessel.\n\nIt's amazing how far we've come in that now I can purchase a helium-based cryocooler. It compresses and expands the gas to absorb heat from the tip of the cold finger and eject it into the surroundings at ambient temperature.\n...\nhttps://www.youtube.com/watch?v=dCXkaQa53QQ", "languages": [ "en" ], "license": "Copyrighted (contact publisher)", "release_time": "1565975192", "source": { "hash": "6dca2a98dcc3f2cdd4d969af251d51f204c9d7553dbca0bafe8d35dda28a09d69223a95850b15aefe2eb8152d36074c3", "media_type": "video/mp4", "name": "making-liquid-nitrogen-from.mp4", "sd_hash": "4fa600729e3c4894da626ec3c399dc8706b39e38cddadb82cd92d8d3a3554909d2058731b7496b780bc21c09b5a26ec4", "size": "254606295" }, "stream_type": "video", "tags": [ "learning", "science", "cold", "cryocooler", "cryogenic", "how to", "lini", "liquid air", "liquid nitrogen", "ln2", "nitrogen", "nitrogen membrane", "veritasium", "education" ], "thumbnail": { "url": "https://thumbnails.lbry.com/dCXkaQa53QQ" }, "title": "Making Liquid Nitrogen From Scratch!", "video": { "duration": 822, "height": 1080, "width": 1920 } }, "value_type": "stream" }, { "address": "bNb4ZrGrsUZSn3QFzqhBStkdxjA7RBJxxw", "amount": "0.005", "canonical_url": "lbry://@veritasium#f/first-flight-on-another-planet#1", "claim_id": "1d64f70718261973062241ff57e7f070b69050b6", "claim_op": "update", "confirmations": 97413, "height": 696290, "is_channel_signature_valid": true, "meta": { "activation_height": 616978, "creation_height": 616978, "creation_timestamp": 1565815536, "effective_amount": "63.005", "expiration_height": 2719378, "is_controlling": true, "reposted": 0, "support_amount": "63.0", "take_over_height": 616978, "trending_global": 0.0, "trending_group": 0, "trending_local": 0.0, "trending_mixed": 0.0 }, "name": "first-flight-on-another-planet", "normalized_name": "first-flight-on-another-planet", "nout": 0, "permanent_url": "lbry://first-flight-on-another-planet#1d64f70718261973062241ff57e7f070b69050b6", "short_url": "lbry://first-flight-on-another-planet#1", "signing_channel": { "address": "bNb4ZrGrsUZSn3QFzqhBStkdxjA7RBJxxw", "amount": "0.005", "canonical_url": "lbry://@veritasium#f", "claim_id": "fb364ef587872515f545a5b4b3182b58073f230f", "claim_op": "update", "confirmations": 97413, "has_signing_key": false, "height": 696290, "meta": { "activation_height": 549756, "claims_in_channel": 289, "creation_height": 549756, "creation_timestamp": 1555015523, "effective_amount": "263905.380631", "expiration_height": 2652156, "is_controlling": true, "reposted": 0, "support_amount": "263905.375631", "take_over_height": 606290, "trending_global": 0.0, "trending_group": 0, "trending_local": 0.0, "trending_mixed": 4.3770786106733794e-08 }, "name": "@veritasium", "normalized_name": "@veritasium", "nout": 0, "permanent_url": "lbry://@veritasium#fb364ef587872515f545a5b4b3182b58073f230f", "short_url": "lbry://@veritasium#f", "timestamp": 1578536238, "txid": "07be6a81bc3ac539284f030b2a353b64ed277ed0ea1916456293217b74460b87", "type": "claim", "value": { "cover": { "url": "https://thumbnails.lbry.com/banner-UCHnyfMqiRRG1u-2MsSQLbXA" }, "description": "An element of truth - videos about science, education, and anything else I find interesting.", "locations": [ { "country": "US" } ], "public_key": "3056301006072a8648ce3d020106052b8104000a0342000490e4b9181b040c84274d2680c8ab402593610f5102fc9b83c8657bb8b209da2a3d3ba6058083a5195a9bca7ab84737032f050a32d8173af4b00f1a379404aea5", "public_key_id": "bRbG67Kpr8bANiqZGm4LB3dqgcMC3Q5awj", "tags": [ "learning", "science" ], "thumbnail": { "url": "https://thumbnails.lbry.com/UCHnyfMqiRRG1u-2MsSQLbXA" }, "title": "Veritasium" }, "value_type": "channel" }, "timestamp": 1578536238, "txid": "8fdde94e855add29973e3d93874b38901744b126a35e5faae838010a17efd2d9", "type": "claim", "value": { "description": "The Mars Helicopter aims to make the first powered flight on another planet when it takes off on Mars as part of the Mars 2020 mission. I learned a lot getting to visit the drone right before it was mounted on the rover.\n\nHow do you fly in 1% of Earth's atmosphere:\nHave large rotors (they are 1.2m in diameter) and spin them very fast, around 2500 RPM (5x the speed of a helicopter on Earth).\n\nPlus the aircraft has to be light:\nThe Mars helicopter weighs in at 1.8kg or around the same as a laptop. Every piece had to be stripped down for weight. Instead of using aerogel for insulation, the craft makes use of CO2 gaps between components. Even aerogel was too heavy!\n\nOne of the major challenges is surviving the Martian night:\nTemperatures plunge to -80C to -100C so two thirds of the craft's power is actually used to keep its electronics warm. Only one third is used for flying. The estimated flight time is 90 seconds.\n\nThe craft can't be driven remotely, it will have to fly autonomously, using its own sensor suite to determine how to fly. The round trip 20 minute delay with Earth means steering the craft from mission control would be impossible. \n\nHuge Thanks to Patreon Supporters:\nPhilipp Volgger, Chris Vargas, Ron Neal, Alfred Wallace, Colin Bellmore, Michael Krugman, James Knight, Donal Botkin, Sam Lutfi, Mohammed Al Sahaf, Kevin Beavers, Chuck Lauer Vose, Bryan Baker, James Wong, kkm, Manuel Z\u00fcrcher, Tige Thorman, Jasper Xin, Leah Howard, Daniel Milum, Mathias G\u00f6ransson, Stan Presolski, Lyvann Ferrusca, Arjun Chakroborty, June Kang, Listen Money Matters, Pindex, Joar Wandborg, DALE HORNE, Parker Linn, Roberto Rezende\n\nJonny Hyman was a legend in editing, animation, filming, and sound design for this video.\n...\nhttps://www.youtube.com/watch?v=GhsZUZmJvaM", "languages": [ "en" ], "license": "Copyrighted (contact publisher)", "release_time": "1565453537", "source": { "hash": "35911bb66b3d47126fd385fdac8f30fbf87c09e6fd24ce1882d3f6cc31ef42befc0704677680a5276060f703a17767cf", "media_type": "video/mp4", "name": "first-flight-on-another-planet.mp4", "sd_hash": "c459b95fec91d9fcf00217f017a6cddedc5d3ca1afabecf210e8cbadf2d3cd5241a61483221d0b8b7f0aa8712e6893ce", "size": "209744809" }, "stream_type": "video", "tags": [ "learning", "nature", "science", "autonomous", "drone", "exploration", "first flight", "flight", "helicopter", "mars", "mars 2020", "mars helicopter", "powered", "rover", "space", "spacecraft", "veritasium", "education" ], "thumbnail": { "url": "https://thumbnails.lbry.com/GhsZUZmJvaM" }, "title": "First Flight on Another Planet!", "video": { "duration": 960, "height": 1080, "width": 1920 } }, "value_type": "stream" }, { "address": "bNb4ZrGrsUZSn3QFzqhBStkdxjA7RBJxxw", "amount": "0.005", "canonical_url": "lbry://@veritasium#f/why-the-future-of-cars-is-electric#d", "claim_id": "d2dd7606398b6dc228ecc1c162be7cbb17f6d0fe", "claim_op": "update", "confirmations": 97414, "height": 696289, "is_channel_signature_valid": true, "meta": { "activation_height": 610505, "creation_height": 610505, "creation_timestamp": 1564775623, "effective_amount": "233.505", "expiration_height": 2712905, "is_controlling": true, "reposted": 2, "support_amount": "233.5", "take_over_height": 610505, "trending_global": 0.0, "trending_group": 0, "trending_local": 0.0, "trending_mixed": 0.0 }, "name": "why-the-future-of-cars-is-electric", "normalized_name": "why-the-future-of-cars-is-electric", "nout": 0, "permanent_url": "lbry://why-the-future-of-cars-is-electric#d2dd7606398b6dc228ecc1c162be7cbb17f6d0fe", "short_url": "lbry://why-the-future-of-cars-is-electric#d", "signing_channel": { "address": "bNb4ZrGrsUZSn3QFzqhBStkdxjA7RBJxxw", "amount": "0.005", "canonical_url": "lbry://@veritasium#f", "claim_id": "fb364ef587872515f545a5b4b3182b58073f230f", "claim_op": "update", "confirmations": 97413, "has_signing_key": false, "height": 696290, "meta": { "activation_height": 549756, "claims_in_channel": 289, "creation_height": 549756, "creation_timestamp": 1555015523, "effective_amount": "263905.380631", "expiration_height": 2652156, "is_controlling": true, "reposted": 0, "support_amount": "263905.375631", "take_over_height": 606290, "trending_global": 0.0, "trending_group": 0, "trending_local": 0.0, "trending_mixed": 4.3770786106733794e-08 }, "name": "@veritasium", "normalized_name": "@veritasium", "nout": 0, "permanent_url": "lbry://@veritasium#fb364ef587872515f545a5b4b3182b58073f230f", "short_url": "lbry://@veritasium#f", "timestamp": 1578536238, "txid": "07be6a81bc3ac539284f030b2a353b64ed277ed0ea1916456293217b74460b87", "type": "claim", "value": { "cover": { "url": "https://thumbnails.lbry.com/banner-UCHnyfMqiRRG1u-2MsSQLbXA" }, "description": "An element of truth - videos about science, education, and anything else I find interesting.", "locations": [ { "country": "US" } ], "public_key": "3056301006072a8648ce3d020106052b8104000a0342000490e4b9181b040c84274d2680c8ab402593610f5102fc9b83c8657bb8b209da2a3d3ba6058083a5195a9bca7ab84737032f050a32d8173af4b00f1a379404aea5", "public_key_id": "bRbG67Kpr8bANiqZGm4LB3dqgcMC3Q5awj", "tags": [ "learning", "science" ], "thumbnail": { "url": "https://thumbnails.lbry.com/UCHnyfMqiRRG1u-2MsSQLbXA" }, "title": "Veritasium" }, "value_type": "channel" }, "timestamp": 1578536058, "txid": "0e2c99d9dd8915912a16dd4f112b5c68611ef01b108b14c60855c9182719c5ce", "type": "claim", "value": { "description": "Electric cars are now ready to take over thanks to advances in battery technology and their inherent benefits: torque, handling, maintenance. This video was sponsored by BMW: https://www.bmwusa.com/\n\nFull disclosure: I drive an #electric #car. I think electric cars are the future, not mainly because they're better for the environment (which they are if you drive the car for any reasonable length of time) but because they are just better cars. The have better torque and acceleration, better handling, they're more efficient, quieter, they don't smell, they're cheaper to run and best of all you never have to visit a gas station - this appeals to me. I never have to worry about being low on gas because every morning my car is charged and ready to go - just like my phone and laptop. And if you're worried about range, don't. Almost all trips can already be done in an electric car with modest battery pack. And fast chargers along the way make it possible to do longer road trips if necessary. You have to make rest stops anyway, just time them with the charging. And consider that battery tech is getting dramatically cheaper, smaller, lighter. All these reasons are why I see the #future of cars as electric.\n\nWriting & Research\nDerek Muller\nJonny Hyman\nMatthew Shribman https://ve42.co/sciencebath\n\nEditing, Animation, Audio, & Music:\n...\nhttps://www.youtube.com/watch?v=GATuMWAFBUA", "languages": [ "en" ], "license": "Copyrighted (contact publisher)", "release_time": "1564765380", "source": { "hash": "16c9c7f3de50537d63ced00730949db0f091a781930ab462bb0392cc4f62302e828e15eef377f2729877b1836d1c9a25", "media_type": "video/mp4", "name": "why-the-future-of-cars-is.mp4", "sd_hash": "df8122058f9161271990e2281e4dbbff777843b217c740b19c40dc6a8f8249cf090915a2e79af11eb1ae21e1627d1bba", "size": "71091647" }, "stream_type": "video", "tags": [ "learning", "science", "physics", "veritasium", "education" ], "thumbnail": { "url": "https://thumbnails.lbry.com/GATuMWAFBUA" }, "title": "Why the Future of Cars is Electric", "video": { "duration": 339, "height": 720, "width": 1280 } }, "value_type": "stream" }, { "address": "bNb4ZrGrsUZSn3QFzqhBStkdxjA7RBJxxw", "amount": "0.005", "canonical_url": "lbry://@veritasium#f/why-apollo-astronauts-trained-at-a#9", "claim_id": "90c501b36baba89376b8653f321b37cdfb21fc5f", "claim_op": "update", "confirmations": 97413, "height": 696290, "is_channel_signature_valid": true, "meta": { "activation_height": 605602, "creation_height": 605602, "creation_timestamp": 1563990315, "effective_amount": "52.005", "expiration_height": 2708002, "is_controlling": true, "reposted": 0, "support_amount": "52.0", "take_over_height": 605602, "trending_global": 0.0, "trending_group": 0, "trending_local": 0.0, "trending_mixed": 1.0779999826127096e-07 }, "name": "why-apollo-astronauts-trained-at-a", "normalized_name": "why-apollo-astronauts-trained-at-a", "nout": 0, "permanent_url": "lbry://why-apollo-astronauts-trained-at-a#90c501b36baba89376b8653f321b37cdfb21fc5f", "short_url": "lbry://why-apollo-astronauts-trained-at-a#9", "signing_channel": { "address": "bNb4ZrGrsUZSn3QFzqhBStkdxjA7RBJxxw", "amount": "0.005", "canonical_url": "lbry://@veritasium#f", "claim_id": "fb364ef587872515f545a5b4b3182b58073f230f", "claim_op": "update", "confirmations": 97413, "has_signing_key": false, "height": 696290, "meta": { "activation_height": 549756, "claims_in_channel": 289, "creation_height": 549756, "creation_timestamp": 1555015523, "effective_amount": "263905.380631", "expiration_height": 2652156, "is_controlling": true, "reposted": 0, "support_amount": "263905.375631", "take_over_height": 606290, "trending_global": 0.0, "trending_group": 0, "trending_local": 0.0, "trending_mixed": 4.3770786106733794e-08 }, "name": "@veritasium", "normalized_name": "@veritasium", "nout": 0, "permanent_url": "lbry://@veritasium#fb364ef587872515f545a5b4b3182b58073f230f", "short_url": "lbry://@veritasium#f", "timestamp": 1578536238, "txid": "07be6a81bc3ac539284f030b2a353b64ed277ed0ea1916456293217b74460b87", "type": "claim", "value": { "cover": { "url": "https://thumbnails.lbry.com/banner-UCHnyfMqiRRG1u-2MsSQLbXA" }, "description": "An element of truth - videos about science, education, and anything else I find interesting.", "locations": [ { "country": "US" } ], "public_key": "3056301006072a8648ce3d020106052b8104000a0342000490e4b9181b040c84274d2680c8ab402593610f5102fc9b83c8657bb8b209da2a3d3ba6058083a5195a9bca7ab84737032f050a32d8173af4b00f1a379404aea5", "public_key_id": "bRbG67Kpr8bANiqZGm4LB3dqgcMC3Q5awj", "tags": [ "learning", "science" ], "thumbnail": { "url": "https://thumbnails.lbry.com/UCHnyfMqiRRG1u-2MsSQLbXA" }, "title": "Veritasium" }, "value_type": "channel" }, "timestamp": 1578536238, "txid": "d5c9d5e7fada7e206194703937647f060077a0eb79e726ca42997b543f228c47", "type": "claim", "value": { "description": "Apollo astronauts trained in nuclear bomb craters at the Nevada National Security Site. But why?Thanks Audible! Start listening with a 30-day trial and your first audiobook plus two Audible Originals free when you go to http://audible.com/veritasium or text veritasium to 500500\n\nI found this story fascinating because in a way a nuclear bomb crater is more like a meteorite impact site than an impact site itself. Consider: Barringer Crater was claimed to be a meteorite impact site but geologists dismissed it as a volcanic formation. It was only after studying nuclear bomb craters and the minerals found there that geologists concluded the energy and pressures that created Barringer Crater were too high to be from volcanic activity and therefore must have formed from a meteorite impact.\n\nSpecial Thanks to:\nNevada National Security Site\nThe National Atomic Testing Museum\nJonny Hyman and Verse: https://youtu.be/7bUUGzi-AAY\nActive Galactic for footage of craters in Arizona: https://youtu.be/yhoooBpndog\n\n...\nhttps://www.youtube.com/watch?v=E7uGvsT_nnM", "languages": [ "en" ], "license": "Copyrighted (contact publisher)", "release_time": "1563563536", "source": { "hash": "caa7b167e6b2f548116bc3b04cb9409ffc11ef90cea7145ebb0fe23923819fad55418832a1ea7f4311c5aa4a74220db2", "media_type": "video/mp4", "name": "why-apollo-astronauts-trained.mp4", "sd_hash": "40828f7e9795f8a1827f2368fe1828dc94a69911c244e803a8dd1e62088948337c65913ecc8f0a10cd60a2a0415b6d48", "size": "155174669" }, "stream_type": "video", "tags": [ "learning", "science", "apollo", "apollo 11", "astronauts", "atomic bomb", "bomb", "crater", "impact", "landing", "meteor", "meteorite", "nuclear", "nuclear bomb", "veritasium", "education" ], "thumbnail": { "url": "https://thumbnails.lbry.com/E7uGvsT_nnM" }, "title": "Why Apollo Astronauts Trained at a Nuclear Test Site", "video": { "duration": 788, "height": 720, "width": 1280 } }, "value_type": "stream" }, { "address": "bNb4ZrGrsUZSn3QFzqhBStkdxjA7RBJxxw", "amount": "0.005", "canonical_url": "lbry://@veritasium#f/how-a-fish-saved-the-vikings#7", "claim_id": "79c5bd9d31177bf0a3cd1cf685a8e668138837ce", "claim_op": "update", "confirmations": 97414, "height": 696289, "is_channel_signature_valid": true, "meta": { "activation_height": 596602, "creation_height": 596602, "creation_timestamp": 1562537549, "effective_amount": "85.005", "expiration_height": 2699002, "is_controlling": true, "reposted": 0, "support_amount": "85.0", "take_over_height": 596602, "trending_global": 0.0, "trending_group": 0, "trending_local": 0.0, "trending_mixed": 0.0 }, "name": "how-a-fish-saved-the-vikings", "normalized_name": "how-a-fish-saved-the-vikings", "nout": 0, "permanent_url": "lbry://how-a-fish-saved-the-vikings#79c5bd9d31177bf0a3cd1cf685a8e668138837ce", "short_url": "lbry://how-a-fish-saved-the-vikings#7", "signing_channel": { "address": "bNb4ZrGrsUZSn3QFzqhBStkdxjA7RBJxxw", "amount": "0.005", "canonical_url": "lbry://@veritasium#f", "claim_id": "fb364ef587872515f545a5b4b3182b58073f230f", "claim_op": "update", "confirmations": 97413, "has_signing_key": false, "height": 696290, "meta": { "activation_height": 549756, "claims_in_channel": 289, "creation_height": 549756, "creation_timestamp": 1555015523, "effective_amount": "263905.380631", "expiration_height": 2652156, "is_controlling": true, "reposted": 0, "support_amount": "263905.375631", "take_over_height": 606290, "trending_global": 0.0, "trending_group": 0, "trending_local": 0.0, "trending_mixed": 4.3770786106733794e-08 }, "name": "@veritasium", "normalized_name": "@veritasium", "nout": 0, "permanent_url": "lbry://@veritasium#fb364ef587872515f545a5b4b3182b58073f230f", "short_url": "lbry://@veritasium#f", "timestamp": 1578536238, "txid": "07be6a81bc3ac539284f030b2a353b64ed277ed0ea1916456293217b74460b87", "type": "claim", "value": { "cover": { "url": "https://thumbnails.lbry.com/banner-UCHnyfMqiRRG1u-2MsSQLbXA" }, "description": "An element of truth - videos about science, education, and anything else I find interesting.", "locations": [ { "country": "US" } ], "public_key": "3056301006072a8648ce3d020106052b8104000a0342000490e4b9181b040c84274d2680c8ab402593610f5102fc9b83c8657bb8b209da2a3d3ba6058083a5195a9bca7ab84737032f050a32d8173af4b00f1a379404aea5", "public_key_id": "bRbG67Kpr8bANiqZGm4LB3dqgcMC3Q5awj", "tags": [ "learning", "science" ], "thumbnail": { "url": "https://thumbnails.lbry.com/UCHnyfMqiRRG1u-2MsSQLbXA" }, "title": "Veritasium" }, "value_type": "channel" }, "timestamp": 1578536058, "txid": "0c65ac6c9bca83da631a37e087c93d0ba9836cc2024ccc4ec4a7a3f33d9d5249", "type": "claim", "value": { "description": "The Vikings suffered many hardships living in the north of Europe: long, cold winters and importantly a lack of sunlight. Luckily, they had cod.\nCheck out Vitamania: https://ve42.co/cod\n\nWhen making a video about vitamins I thought the story would mainly be about supplement pills, whether we should or shouldn't take them and how they're made. But what I found out is vitamins have a remarkable story that affects many more aspects of our lives. For example the Vikings needed a source of vitamin D to last the dark winter months and for their children to develop strong, healthy bones, avoiding rickets.\n\nSpecial thanks to Patreon supporters:\na human, Albert Jachowicz-Brzezi\u0144ski, Alfred Wallace, Arjun Chakroborty, Brent Stewart, Chris Vargas, Chuck Lauer Vose, Clip Tree, Coale Shifflett, Colin Bellmore, DALE HORNE, Eric Velazquez, Fedor Indutny, Fran Rodriguez, James Wong, Jasper Xin, Joar Wandborg, Johnny, Jorge Angel Sandoval, June Kang, Kevin Beavers, Kishore Tipirneni, Levan Ferr, Listen Money Matters, Manuel Z\u00fcrcher, Mark Bevilacqua, Mathias G\u00f6ransson, Michael Bradley Wirz, Michael Krugman, Mohammed Al Sahaf, Nicholas Hastings, OddJosh, Patrick \u010calija, Peter Tajti, Philipp Volgger, Roberto Rezende, Robin DeBank, Ron Neal, Stan Presolski, Swante Scholz, Tiago Bruno, Tige Thorman, Warrior8252\n\nThis video was filmed by Harry Panagiotidis\nResearched and written by Derek Muller and Jonny Hyman\n...\nhttps://www.youtube.com/watch?v=BtCNBh0AsWM", "languages": [ "en" ], "license": "Copyrighted (contact publisher)", "release_time": "1562515771", "source": { "hash": "4e1c009b988d697472f8c7fb753e3554cf103bfcc9efcd8248369b0c6dff9910e378d93ab22bcded7c6883c6ac384272", "media_type": "video/mp4", "name": "how-a-fish-saved-the-vikings.mp4", "sd_hash": "d7df864677a91b6d76965c9ec5ceb6e51033b49bb6f6751ff9acdcc0e5d3d24015eb65525ea7990a194034f4fefd0976", "size": "104188456" }, "stream_type": "video", "tags": [ "food", "gaming", "learning", "science", "cod", "fish", "greenland", "health", "history", "iceland", "norway", "nutrition", "osteomalacia", "rickets", "sunlight", "sunshine", "veritasium", "viking", "vikings", "vitamin", "vitamin d", "vitamins", "education" ], "thumbnail": { "url": "https://thumbnails.lbry.com/BtCNBh0AsWM" }, "title": "How a Fish Saved the Vikings", "video": { "duration": 551, "height": 720, "width": 1280 } }, "value_type": "stream" }, { "address": "bNb4ZrGrsUZSn3QFzqhBStkdxjA7RBJxxw", "amount": "0.005", "canonical_url": "lbry://@veritasium#f/i-waterproofed-myself-with-aerogel#7", "claim_id": "73763074ce0ad5a9b670aad10be966d4102021ff", "claim_op": "update", "confirmations": 97414, "height": 696289, "is_channel_signature_valid": true, "meta": { "activation_height": 590806, "creation_height": 590806, "creation_timestamp": 1561583499, "effective_amount": "79.005", "expiration_height": 2693206, "is_controlling": true, "reposted": 1, "support_amount": "79.0", "take_over_height": 590806, "trending_global": 0.0, "trending_group": 0, "trending_local": 0.0, "trending_mixed": 0.0 }, "name": "i-waterproofed-myself-with-aerogel", "normalized_name": "i-waterproofed-myself-with-aerogel", "nout": 0, "permanent_url": "lbry://i-waterproofed-myself-with-aerogel#73763074ce0ad5a9b670aad10be966d4102021ff", "short_url": "lbry://i-waterproofed-myself-with-aerogel#7", "signing_channel": { "address": "bNb4ZrGrsUZSn3QFzqhBStkdxjA7RBJxxw", "amount": "0.005", "canonical_url": "lbry://@veritasium#f", "claim_id": "fb364ef587872515f545a5b4b3182b58073f230f", "claim_op": "update", "confirmations": 97413, "has_signing_key": false, "height": 696290, "meta": { "activation_height": 549756, "claims_in_channel": 289, "creation_height": 549756, "creation_timestamp": 1555015523, "effective_amount": "263905.380631", "expiration_height": 2652156, "is_controlling": true, "reposted": 0, "support_amount": "263905.375631", "take_over_height": 606290, "trending_global": 0.0, "trending_group": 0, "trending_local": 0.0, "trending_mixed": 4.3770786106733794e-08 }, "name": "@veritasium", "normalized_name": "@veritasium", "nout": 0, "permanent_url": "lbry://@veritasium#fb364ef587872515f545a5b4b3182b58073f230f", "short_url": "lbry://@veritasium#f", "timestamp": 1578536238, "txid": "07be6a81bc3ac539284f030b2a353b64ed277ed0ea1916456293217b74460b87", "type": "claim", "value": { "cover": { "url": "https://thumbnails.lbry.com/banner-UCHnyfMqiRRG1u-2MsSQLbXA" }, "description": "An element of truth - videos about science, education, and anything else I find interesting.", "locations": [ { "country": "US" } ], "public_key": "3056301006072a8648ce3d020106052b8104000a0342000490e4b9181b040c84274d2680c8ab402593610f5102fc9b83c8657bb8b209da2a3d3ba6058083a5195a9bca7ab84737032f050a32d8173af4b00f1a379404aea5", "public_key_id": "bRbG67Kpr8bANiqZGm4LB3dqgcMC3Q5awj", "tags": [ "learning", "science" ], "thumbnail": { "url": "https://thumbnails.lbry.com/UCHnyfMqiRRG1u-2MsSQLbXA" }, "title": "Veritasium" }, "value_type": "channel" }, "timestamp": 1578536058, "txid": "e7067ce7426a4df7d605c26a87561f18a244f9799bc021773184a00d0165aa62", "type": "claim", "value": { "description": "Aerogel has extraordinary properties but it can be tough to work with. This video looks at modifying aerogels to take advantage of their unique characteristics.\nSubscribe to Veritasium: https://ve42.co/sub\n\nHuge thanks to Dr. Stephen Steiner and the crew at Aerogel Technologies. To find out more or buy your own aerogel sample, check out: http://www.aerogeltechnologies.com/\n\nThanks to Dr. Steven Jones and Dr. Mihail Petkov at NASA's Jet Propulsion Laboratory\n\nAnd thanks to FLIR for loaning us the awesome high definition thermal camera. The footage is amazing! https://www.flir.com\n\nAerogel\u2019s extraordinary properties are due in large part to its structure. Aerogel is a solid but on the nanoscale it has a mesh or sponge-like structure. The struts of this structure are nanoscale, as are the pores at around 20nm across. This makes silica aerogel incredibly light (it was once the lightest solid but has now been superseded by graphene aerogel), transparent and adsorbent. \n...\nhttps://www.youtube.com/watch?v=GcdB5bFwio4", "languages": [ "en" ], "license": "Copyrighted (contact publisher)", "release_time": "1561150772", "source": { "hash": "5d45382dae59fc9b00b127c795eaac6b580bf0221511d98a384dfd4af9283b455f1cad98cc777d9328792cc60b81e771", "media_type": "video/mp4", "name": "i-waterproofed-myself-with.mp4", "sd_hash": "60835feaa704ab534894023894b964463586a5737c363c31d1b94e7922b36bd99d73cc80b5a5e9af1feb6b5e67b27b82", "size": "59855198" }, "stream_type": "video", "tags": [ "learning", "science", "aerogel", "blowtorch", "fireproof", "physics", "veritasium", "waterproof", "education" ], "thumbnail": { "url": "https://thumbnails.lbry.com/GcdB5bFwio4" }, "title": "I Waterproofed Myself With Aerogel!", "video": { "duration": 741, "height": 720, "width": 1280 } }, "value_type": "stream" }, { "address": "bNb4ZrGrsUZSn3QFzqhBStkdxjA7RBJxxw", "amount": "0.005", "canonical_url": "lbry://@veritasium#f/can-you-swim-in-shade-balls#2", "claim_id": "2a5e0a94c2cb7a71444922e3227205cd9c7304cf", "claim_op": "update", "confirmations": 97414, "height": 696289, "is_channel_signature_valid": true, "meta": { "activation_height": 584523, "creation_height": 584523, "creation_timestamp": 1560570291, "effective_amount": "108.005", "expiration_height": 2686923, "is_controlling": true, "reposted": 1, "support_amount": "108.0", "take_over_height": 584523, "trending_global": 0.0, "trending_group": 0, "trending_local": 0.0, "trending_mixed": 1.1742674610459858e-09 }, "name": "can-you-swim-in-shade-balls", "normalized_name": "can-you-swim-in-shade-balls", "nout": 0, "permanent_url": "lbry://can-you-swim-in-shade-balls#2a5e0a94c2cb7a71444922e3227205cd9c7304cf", "short_url": "lbry://can-you-swim-in-shade-balls#2", "signing_channel": { "address": "bNb4ZrGrsUZSn3QFzqhBStkdxjA7RBJxxw", "amount": "0.005", "canonical_url": "lbry://@veritasium#f", "claim_id": "fb364ef587872515f545a5b4b3182b58073f230f", "claim_op": "update", "confirmations": 97413, "has_signing_key": false, "height": 696290, "meta": { "activation_height": 549756, "claims_in_channel": 289, "creation_height": 549756, "creation_timestamp": 1555015523, "effective_amount": "263905.380631", "expiration_height": 2652156, "is_controlling": true, "reposted": 0, "support_amount": "263905.375631", "take_over_height": 606290, "trending_global": 0.0, "trending_group": 0, "trending_local": 0.0, "trending_mixed": 4.3770786106733794e-08 }, "name": "@veritasium", "normalized_name": "@veritasium", "nout": 0, "permanent_url": "lbry://@veritasium#fb364ef587872515f545a5b4b3182b58073f230f", "short_url": "lbry://@veritasium#f", "timestamp": 1578536238, "txid": "07be6a81bc3ac539284f030b2a353b64ed277ed0ea1916456293217b74460b87", "type": "claim", "value": { "cover": { "url": "https://thumbnails.lbry.com/banner-UCHnyfMqiRRG1u-2MsSQLbXA" }, "description": "An element of truth - videos about science, education, and anything else I find interesting.", "locations": [ { "country": "US" } ], "public_key": "3056301006072a8648ce3d020106052b8104000a0342000490e4b9181b040c84274d2680c8ab402593610f5102fc9b83c8657bb8b209da2a3d3ba6058083a5195a9bca7ab84737032f050a32d8173af4b00f1a379404aea5", "public_key_id": "bRbG67Kpr8bANiqZGm4LB3dqgcMC3Q5awj", "tags": [ "learning", "science" ], "thumbnail": { "url": "https://thumbnails.lbry.com/UCHnyfMqiRRG1u-2MsSQLbXA" }, "title": "Veritasium" }, "value_type": "channel" }, "timestamp": 1578536058, "txid": "c57e082025360004dfe51a6ac21e5a79d3acc11f3a64c587cecf976a432b130d", "type": "claim", "value": { "description": "I bought 10,000 shade balls and tried to swim in them. They appear to act like a non-Newtonian fluid: rigid under high shear stress, but they flow like a liquid under low shear.\nGet a signed shade ball by supporting Veritasium: https://ve42.co/patreon\n\nReceiving a shade ball:\n1. Support Veritasium on any Patreon tier and enter your address https://ve42.co/patreon\n2. In about a month I will send out signed shade balls\n3. I will cover all shipping costs but if things get really crazy I will prioritize existing Patreon supporters and higher tiers\n\nMy sense was that swimming in shade balls would be difficult but still doable. This was roughly true for the single layer of shade balls. The shade balls slide past each other so they act like a liquid, albeit a viscous one owing to their significant inertia. It's much more intense exercise and it's also annoying to be bombarded with shade balls on all sides of your body, particularly your head. With multi-layer shade balls (as exists on much of LA reservoir) things get significantly more difficult. The balls bunch together and when you try to move through them quickly, they become more rigid, providing significant resistance to motion. This has the benefit that you can lie on them and as long as they stay trapped under you, you can float on them. But a little bit of motion causes them to move around and you sink through quickly.\n\n...\nhttps://www.youtube.com/watch?v=BZbChKzedEk", "languages": [ "en" ], "license": "Copyrighted (contact publisher)", "release_time": "1560444145", "source": { "hash": "bb8b2693d35c216a09425328462bb41a1245d6dd4f18749ea43fe252e3065bd5374b7ef83b35d40adf7a71edbc992f6b", "media_type": "video/mp4", "name": "can-you-swim-in-shade-balls.mp4", "sd_hash": "91d3754805ec956c6d95af46eb3fa800ce85da440366aabce376584736d2f2b2b019df4d47428c007e986800ea0d361a", "size": "181225841" }, "stream_type": "video", "tags": [ "learning", "science", "balls", "black balls", "los angeles", "physics", "reservoir", "shade balls", "swim", "swimming", "veritasium", "education" ], "thumbnail": { "url": "https://thumbnails.lbry.com/BZbChKzedEk" }, "title": "Can You Swim in Shade Balls?", "video": { "duration": 641, "height": 720, "width": 1280 } }, "value_type": "stream" } ], "page": 1, "page_size": 20 } } ```

tzarebczan commented 4 years ago

If your PR fixes it and the results are accurate, I'd say just go and ship it!

lbryio / lbry-desktop

Price="free" yields nothing #4477

For comparison, this is what I get with "<=0":