Is it true that time passes differently in space, so you age slower or something? How does that work?
Pooba
http://www.google.com/search?hl=en&lr=&ie=UTF-8&oe=utf-8&q=einstein+relativity&btnG=Google+Search
Martin
It actually has to do with how fast you move and perspective…the faster-the slower things seem to move…think of a lowly fly: how long does it live? a couple weeks, but to it might be years: it perseive most thing to move slower…
if you want a far out example: imagine you’re near the “event horizon” of a black hole, time seems to speed up(the ship you came in seems to have left in a hurry!
) but to those looking at you from the mothership see you as having stoped!
Hope this makes some sence!
With the caveat that any measurement with respect to time belong only to the ‘human paradigm’ and remains as relative as relativity itself.
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I heard they prove you skip time after you flew on a airplane.
Yes, one millionth of a second, or some equally small period of time.
nothing to worry about I think…
Martin
A wierd effect of relativity is that if you were moving at half the speed of light and shone a torch in front of you, you would still see the light move away from you at the speed of light.
actually if you held a torch in front of you, you’d be one crispy critter!
In ELP (a gifted-kids class I took for a few years, and might not take this year), we learned about this really strange twin paradox where if you had a twin, then flew to a star and turned around and went home, your twin would be older than you. The only problem is that you now can’t boss around your twin %| (Yes, I’m psycho.)
Andy83: Would it work with something like a normal lightbulb, or even just a cigarette lighter, or is there some kind of property in a torch that allows it and only it to have that kind of effect?
BTW: Does anyone know the exact physics of the theory where you can slow down time to where everyone on earthly bodies slows down to what seems to be a pause? (Or something around that kind of thing.)
By torch I just meant anything that emits light.
In theory the maximum speed limit of the universe is the speed of light. Now if you’re traveling at half the speed of light and light moves away in front of you at the speed of light, that’s impossible right? It would have to exceed that speed limit. I believe they’ve done experiments to prove this, not too sure though.
Time has to change to explain this. Since:
Speed = Distance / Time (I assume we all know this from school :P)
The speeds aren’t changing and neither are the distances, so therefore time must be.
from:
x^2 - c^2t^2 = X^2 - c^2T^2
you can derive:
T = (t + v^2/c^2)/Sqrt(1 - v^2/c^2)
X = (x - v*t)/Sqrt(1 - v^2/c^2)
M = (m)/Sqrt(1 - v^2/c^2)
(note that capital letters denotes mesure relative to the observator)
Martin
PS: The first two are exactly like Lorentz equations of electromagnetism, yet applies to simple mecanics too.
In the rest of the world a flashlight is a torch, same as a sidewalk is a pavement and an ass is a donkey.
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What the hell is that :o
What the hell is that :o[/quote]
I’ll make a rough guess from my knowledge of physics:
c = speed of light
x = distance
t = time
v = velocity
m = ???
Please define your variables before writing out equations theeth 
x => position
c => speed of light
t => time
v => speed
m => mass
Martin
actually i think you’ll find that the fastest speed anything can go is existing at every point in sapce at everypoint in time.
humans might not be able to cope with the stresses of breking the light barrier but theres no reason why you couldent break it
light is only a wave
oh by the way “time” is just a human invention. 1 day 24 hours 60 mins 100 secs. all fractions bassed on our rotation around the sun.
what i like to refer as ticks(space time) is created by the movement of particals, ticks (spacetime) only exists because of movment, if everything in the univerce reached amsolute zero the would be no ticks thus theoreticaly if u froze the universe you could travel faster than light.
i really should do physics and explain / prove this.
Hm but then there is nothing moving to travel with.
BTW, does gravity has a speed ?
This is only true once you involve dimensions higher than time. The fastest possible speed anything can travel in spacetime is the speed of light.
Gravity is a force, not a physical object. Thus it cannot move.
I’ve always wondered why gravity exists and what causes it. How does matter attract other matter seemingly without anything connecting it?
Gravity has an infinite range too, an atom at one side of the universe attracts another at the other side.