Add some more on qm

[drewsberry]

I feel like Uncertainty Principle should have at least its own section, and later on its own page.

[drewsberry]

I like the bit about the spectrum.

[hmac]

Well I was thinking the uncertainty principle is just a specific example of a more general class of commutation constraints, but then that might be better reserved for the advanced level course

[drewsberry]

No yeah, I liked what you wrote about it, I just definitely felt like it also deserved it's own page, given its relative fame.

[hmac]

Yeah, an article page on it would be good.