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'''Quantum mechanics''' is a branch of [[physics]] which was developed in the early 20th century as physicists adjusted their theories to the result of the [[Michelson-Morley experiment]]. According to quantum theory, energy comes in discrete amounts or packets (see [[quanta]]), rather than being infinitely divisible; this parallels the ancient concept of the [[atom]], viewed by the ancient Greeks as the smallest possible division of matter.

'''Quantum mechanics''' is the branch of [[physics]] that describes the behavior of systems on very small length and energy scales, such as those found in [[atom]]ic and subatomic interactions.  It is essential for understanding certain concepts that [[classical physics]] cannot explain, such as the discrete nature of small-scale interactions, [[wave-particle duality]], the [[uncertainty principle]], and [[quantum entanglement]].  Quantum mechanics forms the basis for our understanding of many phenomena, including [[chemical reaction]]s and [[radioactive decay]], as well as all [[computer]]s and electronic devices today.

 

Quantum mechanics describes the behavior of systems on very small length and energy scales, such as those found in [[atom]]ic and subatomic interactions.  It is essential for understanding certain concepts that [[classical physics]] cannot explain, such as the discrete nature of small-scale interactions, [[wave-particle duality]], the [[uncertainty principle]], and [[quantum entanglement]].  Quantum mechanics forms the basis for our understanding of many phenomena, including [[chemical reaction]]s and [[radioactive decay]], as well as all [[computer]]s and electronic devices today.

==History==

==History==