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Old 27th May 2006, 17:47
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Matthew Parsons
 
Join Date: Feb 2005
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Physics geeks should never write poetry.

There once was a fencer named Fisk.
Whose thrust was exceedingly brisk.
So quick was his action,
The Lorentz-Fitzgerald contraction,
Reduced his rapier to a disk.

See what I mean?

It's better not to try to understand why, just accept that you can't exceed the speed of light. Essentially, space and time are inseperable. As you transit through space you also have to transit through time. While we normally travel through time (ie the second hand is always moving), as you travel through space faster than something else you travel through time faster than it as well. What we think of as speed is only how quickly we get between two points. As we reduce the time it takes to get between the points, we also travel faster through time relative to the points, making our speed finite at the speed of light. Like I said, better to just accept it.

You can theoretically get somewhere before a pulse of light that leaves at the same time as you. To do this, you have to change the shape of the space-time around you. This is where Star Trek was leading us with the warp drive. It'll probably never happen, but its a popular thought exercise.

"Six Easy Pieces" is also a good book by Feynman.
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