Problem 2185. Speed of light:Experiment

Created by Zikobrelli in Community

in 1849, Fizeau set up an experiment to measure the speed of light. The discription of this experiment can be found on wikipedia.

A animation can be found on

L is the source of light

The cogwheel 'Z' has T number of teeth,rotating at X RPM

d is the distance(in km) separating lenses S1 and S2.

Given T, X and d, what was Fizeau's approximation of the speed of light in km/s?

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89.47% Correct | 10.53% Incorrect
Last solution submitted on Jan 24, 2019

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