Michelson-Morley experiment


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Michelson-Morley experiment

(ˌmaɪkəlsənˈmɔːlɪ)
n
(General Physics) an experiment first performed in 1887 by A. A. Michelson and E. W. Morley, in which an interferometer was used to attempt to detect a difference in the velocities of light in directions parallel and perpendicular to the earth's motion. The negative result was explained by the special theory of relativity
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Noun1.Michelson-Morley experiment - a celebrated experiment conducted by Albert Michelson and Edward MorleyMichelson-Morley experiment - a celebrated experiment conducted by Albert Michelson and Edward Morley; their failure to detect any influence of the earth's motion on the velocity of light was the starting point for Einstein's theory of relativity
experiment, experimentation - the act of conducting a controlled test or investigation
References in periodicals archive ?
This measurement difficulty is evident in the design of the Michelson-Morley experiment of 1887 in which the detection instrument was built to measure not the actual ether but to measure instead the effect of an ether "wind" on the movement of the earth.
Continues Rosen, Einstein foreclosed the interpretation of the Michelson-Morley experiment that the constancy of the speed of light was indicative of a blending of the subject and object.
In his last years, Michelson, who had performed the fateful Michelson-Morley experiment (see 1887), grew interested in measuring the speed of light with new precision.
Another instrument figured in the famous Michelson-Morley experiment, paving the way for the theory of relativity, and still others were applied to optical testing early in the 20th century.
We shall examine in the following section two reasons for adopting PULC (given PLC), the first based on (a 'weak' version of) the relativity principle, and the second on the outcome of the 1887 Michelson-Morley experiment.
Hendrik Lorentz, the Dutch physicist, attempted to explain the Michelson-Morley experiment in terms of his now-famous contraction equations.
Before the advent of STR, FitzGerald [1] and Lorentz [2] proposed a solution to the Michelson-Morley experiment, different from that resulting from the Einstein's theory.

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