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Quantum mechanics in physics is the branch of mechanics, based on the quantum theory used for interpreting the behaviour of elementary particles and atoms, which do not obey Newtonian mechanics.
Added 6/27/2014 7:14:25 AM
This answer has been confirmed as correct and helpful.
Confirmed by
selymi [6/27/2014 7:17:16 AM], Rated good by
jeifunk