What are quantum mechanics?

  • (noun): The branch of quantum physics that accounts for matter at the atomic level; an extension of statistical mechanics based on quantum theory (especially the Pauli exclusion principle).

Quantum Mechanics

Quantum mechanics (QM – also known as quantum physics, or quantum theory) is a branch of physics dealing with physical phenomena at microscopic scales, where the action is on the order of the Planck constant. Quantum mechanics departs from classical mechanics primarily at the quantum realm of atomic and subatomic length scales. Quantum mechanics provides a mathematical description of much of the dual particle-like and wave-like behavior and interactions of energy and matter.

Read more about Quantum Mechanics.

Some articles on quantum mechanics:

Bohmian - History - De Broglie–Bohm Theory
... After publishing a popular textbook on Quantum Mechanics which adhered entirely to the Copenhagen orthodoxy, Bohm was persuaded by Einstein to take a critical look at von Neumann's theorem ... was 'A Suggested Interpretation of the Quantum Theory in Terms of "Hidden Variables" I and II' ... be disturbances to this, in the way Brownian motion disturbs Newtonian mechanics) ...
Superstring Theory - Integrating General Relativity and Quantum Mechanics
... with situations involving large mass objects in fairly large regions of spacetime whereas quantum mechanics is generally reserved for scenarios at the atomic scale (small ... unit of length) lengths, general relativity predicts a smooth, flowing surface, while quantum mechanics predicts a random, warped surface, neither of which ... diameter of the Planck length, with extremely small variances, which completely ignores the quantum mechanical predictions of Planck-scale length dimensional ...
Quantum Mechanics - Examples - Harmonic Oscillator
... Main article Quantum harmonic oscillator As in the classical case, the potential for the quantum harmonic oscillator is given by This problem can be solved either by solving the Schrödinger ...
Leggett–Garg Inequality
... itself, or on the subsequent system dynamics." In quantum mechanics, the Leggett–Garg inequality is violated, meaning that the time evolution of a system cannot be understood classically ... Here quantum entanglement plays the central role ... not be obtained in the standard Copenhagen Interpretation of quantum mechanics in its various formulations ...

Famous quotes containing the words mechanics and/or quantum:

    It is only the impossible that is possible for God. He has given over the possible to the mechanics of matter and the autonomy of his creatures.
    Simone Weil (1909–1943)

    A personality is an indefinite quantum of traits which is subject to constant flux, change, and growth from the birth of the individual in the world to his death. A character, on the other hand, is a fixed and definite quantum of traits which, though it may be interpreted with slight differences from age to age and actor to actor, is nevertheless in its essentials forever fixed.
    Hubert C. Heffner (1901–1985)