Question

what is quantum physics

Answer 1

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Quantum is a theory of in physics


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Quantum mechanics, a major field of physics

Old quantum theory, predating modern quantum mechanics

Quantum field theory, an area of quantum mechanics that includes:

Quantum electrodynamics

Quantum chromodynamics

Electroweak interaction

Quantum gravity, a field of theoretical physics

Quantum optics

Quantum chemistry

Quantum information

Answer 2

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The answer is here



♢ Quantum physics deals with quantities and particles of the size of atoms and molecule and the sub atomic particles like proton, electron , neutron etc.

The physics and properties of particles of the size of nanometers and less is quite different from that of macroparticles that we can see with eyes.  These particles have dual nature - wave like nature and particle like nature

Quantum mechanics or physics or quantum theory are all referring to the same science subject.  In quantum mechanics, the physical quantities like energy, mass, charge etc. exist in discrete quantities. 



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