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How A Laser Appears To Move Faster Than Light (And Why It Really Isn’t)
Gieren et al. used the 8.2-m Very Large Telescope (Yepun) to image M33, and deduce the distance to that galaxy (image credit: ESO).
We at Universe Today often hear theories purporting that Einstein is wrong, and perhaps one of the most common things cited is the speed limit for light used in his relativity theories. In a vacuum, light goes close to 300,000 km/s (roughly 186,000 miles a second). Using a bit of geometry, however, isn’t there a way to make it go faster? This video below shows why you’d think it would work that way, but it actually wouldn’t.
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Read the rest of How A Laser Appears To Move Faster Than Light (And Why It Really Isn’t) (152 words)
© Elizabeth Howell for Universe Today, 2014. |
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Source: http://www.universetoday.com/109147/how-a-laser-appears-to-move-faster-than-light-and-why-it-really-isnt/
