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Michelson-Morley experiment
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| Mi·chel·son-Mor·ley ex·per·i·ment [ mk'lss'n máwrlee ik spèrrəmənt ] |
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| Definition: |
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measurement of light's speed in different directions: an attempt to measure the difference in speed between light beams traveling in different directions by using interference effects. The negative result is explained by special relativity.
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| [Early 20th century. After Albert Michelson and Edward Morley (1838-1923), U.S. physicist] |
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