 "Quantum
mechanics, also known as quantum physics or quantum
theory, is a branch of
physics
dealing with physical phenomena where the
action
is of the order of
Planck constant.
It provides a mathematical description of much of
the dual particle-like and wave-like behavior and
interactions of
energy
and
matter.
It departs from
classical mechanics
primarily at the atomic and subatomic scales, the
so-called
quantum realm.
In advanced topics of quantum mechanics, some of
these behaviors are macroscopic and only emerge at
very low or very high energies or
temperatures.
The name "quantum mechanics", coined by
Max Planck,
derives from the observation that some physical
quantities can change only by discrete amounts, or
quanta.
For example, the
angular momentum
of an electron bound to an atom or molecule is
quantized. In the context of quantum mechanics, the
wave–particle duality
of energy and matter and the
uncertainty principle
provide a unified view of the behavior of
photons,
electrons
and other atomic-scale objects.."
Source:
Wikipedia |
