Re: Relativity?
Posted: Thu Oct 12, 2017 12:44 pm
It's actually a good deal simpler than that. The only thing that something travelling at the speed of light could experience, is a collision. Nothing is going to catch it up to affect it.surreptitious57 wrote: ↑Thu Oct 12, 2017 12:10 pm Photons or any massless particles are timeless because nothing travelling at the speed of light is actually capable of experiencing time
'Time' doesn't stop; interactions, other than collisions with objects that cross your path, do.surreptitious57 wrote: ↑Thu Oct 12, 2017 12:10 pmSaying a clock experiences time simply means it can measure time. It does not mean it is a conscious being capable of sensory experience
And it would stop when travelling at the speed of light because it could not experience or measure time as time itself would have stopped
Slower...surreptitious57 wrote: ↑Thu Oct 12, 2017 12:10 pmThe closer a clock gets to the speed of light the faster time goes...
OK. Assume that the speed of light really is as fast as anything can go. Suppose you have a grandfather clock travelling at c. If, in the simplest example, the pendulum is swinging in the plane of movement, it could swing backwards, but to swing in the direction of motion, it would have to exceed the speed of light; in which case, you have to abandon the premise that c really is the speed limit.surreptitious57 wrote: ↑Thu Oct 12, 2017 12:10 pm...but at the speed of light itself time stops for any object of mass. Since clocks
are objects of mass then this would apply to them too.
Well, yes and no. If the clocks i.e. every atom they are made of, are travelling at the speed of light, there can be no interaction between them. The chances of them establishing exactly the same relations, when they drop to sub-c, are vanishingly small.surreptitious57 wrote: ↑Thu Oct 12, 2017 12:10 pmThough they would no longer be clocks at that point as the atoms that they were made
from and more specifically their electrons would become too unstable for them to retain their solidity and they would just disintegrate instead
Only relative to their own inertial frame, but odds of that frame being at absolute rest are not significantly greater than zero.surreptitious57 wrote: ↑Thu Oct 12, 2017 12:10 pmAnything that travels at the speed of light such as a photon does not experience time. But any observer could actually measure its speed in time
In which case, the information would never reach them.surreptitious57 wrote: ↑Thu Oct 12, 2017 12:10 pmSo a human being travelling at the speed of light between two planets would literally arrive in no time at all no matter what the actual distance was. Only an observer watching that human being would be able to measure the time taken since to them it would not have taken no time at all
but a finite amount of time measured from their particular frame of reference. And so long as they were not travelling at the speed of light also