25 Feb '08 19:07>
Originally posted by FabianFnasUhm... well,
Got me there. Perhaps I should write |velocity| or speed or something. I think everyone understand what I mean. Is speed the right word for what I mean?
I still say that there is not any highest speed for massive objects in normal space. Any objections?
As far as I can tell, light speed isn't actually a limit, it's just a discontinuity. Like ATY posted, the c^2-v^2 denominator means that there's a point which is at infinity where c=v, but it's symmetric, so at v>c, the function continues on... so the speed of light wouldn't be a speed limit, but moreso a point speed you can't rest at. If you can somehow get over that infinity problem, you could probably continue on to as many times the speed of light as you want, getting back to normal speed would be another problem.... Well, that's my reading of the situation.
It's like the cops saying that you can go any speed except 41.2mph. Effectively you can't go faster, but an imaginative enough guy could probably find a way.
I think this is the general idea behind tachyons...
http://en.wikipedia.org/wiki/Tachyon