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Why Nature needs Quantum Mechanics?

exchemist

Veteran Member
To account for such things as the photo-electric effect, the stability of atoms, the Periodic Table, atomic and molecular spectra, chemical bonding, the operation of the transistor (and thus of integrated circuits), just to name the few that immediately spring to mind.

QM is one of the two great pillars that support physical chemistry, the other being Statistical Mechanics (which itself relies on the principles of QM).
 

questfortruth

Well-Known Member
To account for such things as the photo-electric effect, the stability of atoms, the Periodic Table, atomic and molecular spectra, chemical bonding, the operation of the transistor (and thus of integrated circuits), just to name the few that immediately spring to mind.

QM is one of the two great pillars that support physical chemistry, the other being Statistical Mechanics (which itself relies on the principles of QM).
I understand, that the effects of our world point to QM. But is an imaginable world without QM possible?
 
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exchemist

Veteran Member
I understand, that the effects of our world point to QM. But is an imaginable world without QM possible?
Yes, if you can imagine one without atoms and molecules. :D

Or you could make up any old stuff you like, really. But it would not be real, obviously, because observation of the real world tells us that it obeys QM.
 

questfortruth

Well-Known Member
Yes, if you can imagine one without atoms and molecules. :D

Or you could make up any old stuff you like, really. But it would not be real, obviously, because observation of the real world tells us that it obeys QM.
My file proves: No there can not be such a world.
 
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