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poorsod
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5
The energy level of electrons in an atom depend on $l$?
4
Chaos is predictable?
4
What do we actually mean when we say that matter is a wave?
4
How do people get the proton number for each element from experiment?
2
Why and how is nondegenerate perturbation theory used for time evolution under $\vec{L}.\vec{S}$ coupling?
1
Is fire plasma?
1
A problem of approximation
1
Is quantum perturbation theory taught in college?
1
Relation between coordinates and frames of reference
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