Changes

'''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''' 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 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==