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historicalmarkerproject/markers/HMY7S_speed-of-light-experiment_Idyllwild-Pine-Cove-CA.html
From this location instruments reflected light in 1926 to Mount Wilson, 82 miles northwest. The work was one of a series of experiments conducted by Nobel Prize-winning scientist Dr. Albert A Michelson to refine the value of the speed of light. Al…
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