Emission theory | Wikipedia audio article
Channel: wikipedia tts
Date: 2018-12-28

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Emission_theory


00:00:47 1 History
00:04:29 2 Refutations of emission theory
00:05:41 2.1 Astronomical sources
00:07:34 2.2 Terrestrial sources
00:10:14 2.3 Interferometry
00:14:01 2.4 Other refutations
00:14:58 3 See also



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SUMMARY
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Emission theory, also called emitter theory or ballistic theory of light, was a competing theory for the special theory of relativity, explaining the results of the Michelson–Morley experiment of 1887. Emission theories obey the principle of relativity by having no preferred frame for light transmission, but say that light is emitted at speed "c" relative to its source instead of applying the invariance postulate. Thus, emitter theory combines electrodynamics and mechanics with a simple Newtonian theory. Although there are still proponents of this theory outside the scientific mainstream, this theory is considered to be conclusively discredited by most scientists.