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Michelson–Morley experiment Syllabification: Mi·chel·son–Mor·ley ex·per·i·ment
Pronunciation: /ˌmīkəlsənˈmôrlē ikˌsperəmənt/

Definition of Michelson–Morley experiment in English:

An experiment performed in 1887 that attempted to measure the relative motion of the earth and the ether by measuring the speed of light in directions parallel and perpendicular to the earth’s motion. The result disproved the existence of the ether, which contradicted Newtonian physics but was explained by Einstein’s special theory of relativity.


Named after A. A. Michelson (see Michelson, Albert Abraham) and E. W. Morley (see Morley, Edward Williams).

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