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In an experiment to measure the speed of light using the apparatus of Armand H. L. Fizeau, the distance between light source and mirror was 11.45 km and the wheel has 720 notches. The experimentally determined value of c was 2.998 x 108 m/s when the outgoing light passed through one notch and then returned through the next notch. Calculate the minimum angular speed of the wheel for this experiment.

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Coleen Amado
Coleen AmadoLv10
26 Nov 2020

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Related textbook solutions

Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

Related questions

In Fizeau's experiment to measure the speed of light, the wheel has 475 notches and rotates with a speed of 55.0 rev/sec. Light passing through one notch travels to the mirror and back just in time to pass through the next notch. If the distance between the wheel and the mirror is 8800 m, how much time does it take the wheel to rotate from one notch to the next?

To measure the speed of light, Fizeau used a rotating diskwithequally spaced holes through which light could pass. Lightwasdirected at the rotating disk, passed through one of theholes,bounced from a distant mirror, and then the angular speed ofthewheel was adjusted until the returning beam of light passedthroughthe next hole in the disk. In one such experiment, the wheelisspun at 1000 rpm and the mirror is 18 km away. If the speedoflight is 3.00 x 108 m/s, what is the requiredangularspacing between the holes so the returning light will passthroughthe next hole?

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