Should God be replaced? Message Board

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Politics : Should God be replaced?

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To: LLCF who wrote (24395)	7/7/2006 10:30:55 AM
From: TigerPaw	Read Replies (2) of 28931

Einstein just got people to look at the speed of light more closely. There had been a famous experiment of the day which was supposed to detect the medium through which light traveled by detecting changes in it's speed as the earth went though it (first one way, and then 3 months later at about a 90 degree angle to the first measurement). It showed nothing, the speed never changed. In an effort to understand why no change in the speed of light was detected Einstein imagined what would be experienced by someone riding on a beam of light. One of the things he realized was that if you could go faster than that beam, then you could get to the destination first and learn what could be "seen" before anything actually had a chance to see it. This violated cause & effect because you could wind up reacting to something based on what "you see" faster than someone else would see the event you were reacting to. It helps to think of light moving real-real slow in the examples. He then imagined two events, say two firecracker-rockets set off at exactly the same time one on either side of you. The light from each would reach you at the same time, so you would conclude that they exploded at the same time. To someone to your side, the light from the nearest would reach them first and the one further would reach them later. They would conclude that the rockets exploded one after the other. From this he concluded that nothing could go faster than light, not even one light ray added to a relative motion. If nothing can go faster than light - and light goes as fast as light - then all light must be traveling at the same speed. Time had no such limitation, so when he plugged the results back into Maxwell's equations he got special relativity. TP

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