What Are the Key Differences Between Quantum and Classical Effects in Physics?

Muneer QAU
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i learned that we have to consider quantum effects at low temperatures and classical effects at high temperatures but i do not the physics behind it
can anyone explain it for me?
thanks in advance :)
 
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Very roughly, Bohr's correspondence principle says that in the limit of high quantum numbers, classical physics applies.
And at low temperatures, only states with low quantum numbers are occupied.
 
thnxxx EmpaDoc
:)
 

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