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*rpm #60

Closed timbrisc closed 3 years ago

timbrisc commented 13 years ago

Issue migrated from trac ticket # 55

component: help | priority: blocker | resolution: wontfix

2011-01-17 19:07:37: patrick.melo@themis.com created the issue

Thank you so much for all the work you are doing. I found the documentation very useful. I had some difficulty, however, finding any documentation related to the unit "rpm" (revolutions per minute), as in the unit that might indicate the speed of a fan, for example. Can you suggest a reference in the specification that deals with this measurement?

timbrisc commented 13 years ago

2011-07-26 18:44:31: gschadow@pragmaticdata.com changed status from new to reject_proposed

timbrisc commented 13 years ago

2011-07-26 18:44:31: gschadow@pragmaticdata.com commented

frequency units are "/min", the fact that it is "revolutions" "rounds" or "rings" does not matter. This should not become a unit. I vote against.

timbrisc commented 6 years ago

2018-03-09 13:35:07: garret@globalmentor.com set component to help

timbrisc commented 6 years ago

2018-03-09 13:35:07: garret@globalmentor.com commented

Could someone indicate how one would indicate RPM using UCUM in that case? I understand the reasoning, but what goes in the "numerator" position with "/min"? What is the standard UCUM unit for a revolution? Surely it would not be "revolution/min", because I can't find "revolution" in the UCUM.

I want to do it the correct way. What is the correct way?

For lab equipment, for example, I believe it is common to set up some motors at a certain speed. It seems convoluted to ask the lab workers to learn how to convert a simple RPM to "2pi/60 rad/s" or whatever.

timbrisc commented 3 years ago

2021-01-15 04:19:11: simon.cox@csiro.au commented

'Revolutions' is a 'count' quantity. There is no unit in the numerator for rpm. It is just /min or min-1.

timbrisc commented 3 years ago

2021-01-15 23:08:58: mitchbre@regenstrief.org changed status from reject_proposed to new

timbrisc commented 3 years ago

2021-01-15 23:09:17: mitchbre@regenstrief.org changed status from new to assigned

timbrisc commented 3 years ago

2021-01-15 23:09:17: mitchbre@regenstrief.org set owner to Simon Cox

timbrisc commented 3 years ago

2021-02-16 05:57:18: simon.cox@csiro.au commented

Gunther - would {rev}/min be an acceptable workaround? (requires no change to UCUM, just guidance to the inquirer).

timbrisc commented 3 years ago

2021-03-24 22:51:50: simon.cox@csiro.au commented

Or even /min{rev}

timbrisc commented 3 years ago

2021-11-05 16:32:06: mitchbre@regenstrief.org changed title from rpm to *rpm

timbrisc commented 3 years ago

2021-11-05 21:19:47: mitchbre@regenstrief.org changed status from assigned to closed

timbrisc commented 3 years ago

2021-11-05 21:19:47: mitchbre@regenstrief.org set resolution to wontfix