np np.
i see what your saying. but its just not what im going for ... today ...

it's theoretical. however AT the speed of light. an object with mass wouldn't be experiencing a change in time. those are the ones belonging to the system (at least afaik)

it would therefore be a matter of knowing the necessary logarithmic function to compare the increase of mass and its affect on time.

This post was edited by zeratul87 on Apr 6 2011 01:21am

well, length only dilates in the direction that you're traveling. Your other two dimensions (the two that are perpendicular to the direction of travel) don't compress at all. But essentially, yes. To you, it looks like the distance that you travel is smaller than what an at-rest observer would see you as traveling.


I don't feel like doing the math atm, but if memory serves, if you travel at 0.75c, then time dilates at a factor of 2.

It's actually a pretty simple calculation. 1 / sqrt(1 - [% of light speed]) = time dilation factor.

So e.g. if you're going 75% light speed, that's 1 / sqrt(1-0.75) = 1/sqrt(0.25) = 1/sqrt(1/4) = sqrt(4) = 2.

edit1: added the reply to djeb
edit2: Damn, I realized I said I didn't feel like doing the math, and then I did the math...

This post was edited by bentherdonethat on Apr 6 2011 01:30am

lol well shit you seem to know a lot more than me on the subject. i'll just let you take over from here.

It all seemed right. The only thing I would add is that the relativistic mass increase is really more a product of the fact that Newton's Second Law must be maintained, and without the mass increase, it'd be possible for a single constant force to accelerate anything to light speed and beyond. I don't actually know if mass truly increases or not, but that certainly is the prevailing theory.

edit: F = m*a a = F/m. As m infinity, a 0, so v would approach c as an asymptote. Given infinite time, the object would eventually reach light speed.

This post was edited by bentherdonethat on Apr 6 2011 01:39am

It's getting late but this sounds like what I would say go look into.

http://www.physicsforums.com/archive/index.php/t-240032.html

Main point was time dilation happens at any speed but does get more prevalent as you reach the speed of light.




This is where perspective comes into Space-Time on the extreme.

Event horizon of a singularity/black-hole.

---

Best I can do with limited time. Have fun researching.

Sigh,
I dislike that stuff shrinking to your perspective so much, lol
But I guess I'll deal with the right answer

Here is an okay link describing the phenomenon of time dilation and paradoxes:
http://galileo.phys.virginia.edu/classes/252/srel_twins.html

Is there something supporting that formula, or is it just an accepted theory