Problem you hear a thunder clap 6 s after you see the

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Unformatted text preview: of it to pass through. Each beam traveled the same distance before being reflected back and allowed to recombine. Based on the interference pattern of the combined waves, Michelson should have been able to detect a winner. But no matter how the experiment was done, the race was always a tie. This eventually forced physicist to abandon the ether theory. Einstein resolved the problem in 1905 with his theory of special relativity. In it he asserts that the speed of light is the same no matter how fast or which way an observer is moving. Michelson Einstein Light Vs. Sound It is important to emphasize just how fast light is. Compared to light, sound is a snail. A wise person once said, “Light travels faster than sound, which is why some people appear bright until you hear them speak.” Have you ever watched a baseball game from a distance? You see the batter make contact with the ball, but the sound of the wallop is delayed. This is because, although sound is really fast, light is super-duper fast. For all practical purposes, when you see som...
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This note was uploaded on 11/17/2011 for the course PHYS 121 taught by Professor Burgeson during the Fall '11 term at BYU.

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