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Direct linkSemay, Claude; Lo Bue, Francesco; Mélin, Soizic; Michel, Francis – Physics Education, 2018
In 1849, Hippolyte Fizeau determined the speed of light in a famous experiment. The idea was to measure the time taken for a pulse of light to travel between an intense light source and a mirror about 8 km away. A rotating cogwheel with 720 notches, that could be rotated at a variable speed, was used to chop the light beam and determine the flight…
Descriptors: Physics, Measurement, Scientific Principles, Light
