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12:30 PM
Q: Question About Momentum and Position Operators and the Postulates of Quantum Mechanics

Cody PayneI've surmised that there are four big facts about the relationships between the position and momentum operators, their Hilbert spaces, and their eigenstates in QM. I think I am just about at a point where -- given one of them -- I'm able to derive the other three. I suppose my question is which o...

2 hours later…
2:09 PM
Q: Why did Feynman say the double slit experiment "contains the only mystery" of quantum mechanics?

Adam HerbstThe double-slit experiment requires wave-like interference of possible paths according to the quantum action principle, but it doesn't require entanglement since it's a single-particle phenomenon. Isn't entanglement arguably even more mysterious, since it violates local realism and thus can't be...

9 hours later…
11:36 PM
Q: Why do dark objects absorb visible light but only emit infrared radiation?

Peter AWhat is it about the molecular structure of dark coloured objects that means they absorb most of the visible light that falls on them, but radiate infrared? Naively I would think that if a molecule can absorb visible light, it could emit it just as easily. The background is this post in earth sci...


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