Time Travel - TranceAddict Forums

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Posted by Turbonium on Oct-22-2003 02:23:

I don't feel like thinking right now, I'll get into this discussion a bit later maybe. Like another day.

Posted by DrUg_Tit0 on Oct-22-2003 11:05:

quote:
Originally posted by whiskers
E=mc^2

time dilation sucks.

if you're moving in a train at c and throw a ball up at speed v, doesn't the ball also have a horizontal velocity component?

don't forget the lorentz factor equation, 1/sqrt(1-v^2/c^2)

thus, if you reach speed very close to c, the time in your reference frame will barely move and you'll have an immense amount of mass, and you'll also be shrunk in the direction of your movement to about several molecules.

Actually, you'd be expanded in the direction of your movement. And you'd still have the same molecular structure, only the molecules in your body would appear to be wider when observed from the outside than they would seem to you. And the mass increase is only apparent, because it takes you more energy to accelerate.

quote:
Originally posted by Psy-T
oh!!! how could i forgotten this?!
you are all talking about time travel in refference to the speed of light, but wouldnt that just be "viewing" the past/future?
why arent you discussing time travel in refference to the speed of sound then?
just imagine, walking around in the world with an auditory time lapse of about 2 minutes,, damn,, that would be hell'a confusing., wouldnt it?

No, you wouldn't be just viewing past/future. If you'd travel at light speed, time for you would not just appear to stop, it really would stop. It's different than it is with sound. Sound waves are merely turbulences in substances. Not that it matters to this discussion, but you can't objectively measure the speed of sound since it's different in every substance, and in vacuum it doesn't exist.

Posted by -=M=- on Mar-19-2004 10:54:

did anyone else read about a year or so ago that the speed of light is quite similar to the way sound moves?

in the fact that light actually appears to slow down slightly the further it has travelled / what objects it has passed thru etc

just something i remembered...

Posted by whiskers on Mar-19-2004 13:23:

Posted by DigiNut on Mar-19-2004 13:30:

quote:
Originally posted by -=M=-
did anyone else read about a year or so ago that the speed of light is quite similar to the way sound moves?

in the fact that light actually appears to slow down slightly the further it has travelled / what objects it has passed thru etc

just something i remembered...

where does this come from?

Every single type of wave gets attenuated with distance and going through objects of different density.

However, sound is a longitudinal pressure wave, and light is a transverse electromagnetic wave. The fact that they are both "waves" is as far as that similarity goes - drawing any other conclusions would be a syllogistic fallacy.

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