Quantum mechanics is a theory in physics that was introduced by Max Planck in 1900 to solve the problem of describing the intensity of radiation emitted by a black body at a given wavelength and constant temperature. Essentially it is a modification of certain views or beliefs of the classical world, especially in relation to the motion of bodies or structureless particles. [Source: Encyclopedia of Time: Science, Philosophy, Theology, & Culture; Quantum Mechanics]
mechanics (physics)
quantum mechanics
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