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HNQ
5:47 PM
2
Q: Is there a reason behind why Archimedes principle works?

GlowingbluejuiceboxI think most of us are quite aware of Archimedes principle, but is there a reason to why it occurs? Is it just an observed property? Why is the upthrust equal to the weight of the liquid?

 
 
4 hours later…
HNQ
9:31 PM
4
Q: How can Cooper pairs form in zero temperature, if there are no phonons?

LighterPhonons behave like Bosons, so they have a Bose Einstein distribution. If you take the zero temperature limit, the distribution vanishes. So at zero temperature there are basically no phonons (up to quantum fluctuations?). But to build a Cooper Pair in the BCS Theory you need phonons, the electro...

 

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