The ABC of Relativity, by Bertrand Russell, Part 2
Boring Books for Bedtime Readings to Help You Sleep
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The Mickelson-Morley Experiment
The experiment was first made as long ago as 1881 and was repeated with more elaboration in 1887. The supposition that the Earth carries the neighboring ether with it in its motion was found to be impossible for a number of reasons. A logical dent lock seemed to have arisen, from which at first physicists sought to extricate themselves by very arbitrary hypotheses.
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