Quantum mechanics is a fundamental branch of theoretical physics that replaces Newtonian mechanics and classical electromagnetism at the atomic and subatomic levels.
See also:
It is the underlying framework of many fields of physics and chemistry, including condensed matter physics, quantum chemistry, and particle physics.
Along with general relativity, it is one of the pillars of modern physics..
For more information about the topic Quantum mechanics, read the full article at Wikipedia.org, or see the following related articles:
Note: This page refers to an article that is licensed under the GNU Free Documentation License. It uses material from the article Quantum mechanics at Wikipedia.org. See the Wikipedia copyright page for more details.

