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correspondence principle

noun, Physics.
the principle that the laws of quantum mechanics and of any new theory that may be developed reduce to the laws of Newtonian mechanics and electromagnetic theory when applied to systems in which Planck's constant can be regarded as negligible, wavelengths are comparatively small, dimensions are relatively large, etc.
Also called principle of correspondence.
Origin of correspondence principle
First recorded in 1920-25 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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