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Old 07-03-2009
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Nothing is actually traveling faster than the speed of light though. Here's a better explanation:
http://physicsworld.com/cws/article/news/19957

They're trying to mimic the way they say the magnetic field behaves around some neutron stars. They say the neutron stars rotate so fast that at a distance large enough away, the polarization of the surrounding plasma rotates faster than light. But that's not really anything moving faster than light. It's like if you had a really bright flashlight and were shining it on a bigass wall 1 light year away, and you swept the light back and forth real fast. There would be a spot on the wall moving faster than light since it's so far away. But a fast moving spot of light doesn't violate anything, because it's not the same packet of light moving that fast... it consists of different photons all the time.

The real interesting part of the article, if it's true, is that due to the polarization rotating faster than light that they can get the light or radio signal to maintain its intensity better. Normally, if r is the distance from the source, its intensity would decrease 1/r^2 from the source. These guys claim they can cause the light or radio beam to decrease in intensity 1/r from the source, which means you don't have to have such an intense source to be received by someone else far away. To really test this though, they're going to have to test it over distances of 10s of thousands of miles. The reflector on the moon left by astronauts would be a good way to test it.
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