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To measure the speed of light in an experiment available to do at school.
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- Words:
- 349
- Submitted:
- Thu Jul 11 2002
... The aim of this experiment is to measure the speed of light in an experiment available to do at school. The principle is quite simple. Let a ray of light strike a rotating mirror that reflects the light three meters away to a second mirror, so that the light is reflected back at the rotating mirror and back to the laser. The rotating mirror has during the time it took for the light to travel the six meters to the second mirror and back rotated some degrees and the light spot has moved from the origin. And if you know how fast the mirror is rotating, you can calculate how fast the light is traveling. The apparatus is set up like the figure below shows. When we did the experiment and measured, x was measured to approximately 3.0 mm - 3.5 mm. So we know that the velocity of light
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