more questions about time travel.?

Question

so the idea is to move so fast that you travel before you leave?
in that case I believe you must travel faster than the speed of time. if this is true, which I think it is, then light is right around the speed of time. light can be slowed down by water and other translucent matter, so therefore, light has nothing to do with it, it is simply a gauge tellnig us the speed of time. because if the speed of time is dependant on light, than if light was slowed by water, than time would have to slow in the water.
and if the speed of time is dependant on light, than what if all the lgiht in the universe where sudenly shut off? would time stop?
so I think light can only be used as a general gauge for the speed of time.

lol @ second answer, I know its theoreticly impossible to travel at the speed of time as to travel backwards.
also, how do you know how fast you are moving in the universe? theres NOTHING to gauage it off of, all any object you choose to gausge your speed from could be moving at inormouse rates of speed and you could think you where standing still and actually be moving at 20 billion MPH

Answer 1

Well there is no possible way that there is a "speed of time". Time is a measure between two events. It is neither "speeding" or even moving. If there was only one event there would be no time. If everything happened at the same moment there would be no time. If you are looking for smallest measure of time that would of course depend on the smallest amount of time where one event changes to another.

"Going into the future" is easy. You can simply wait, or say an animal is frozen and doesn't experience the pasting time you say it moved through time into the future. Or if you believe Einstein, you could go close to the speed of light and you would "slow" in relationship to the universe.

"Going back in time" now that's a bit of a problem, because you need a way undo events that have already happened and then allow them to replay.

Einstein believed that light was the constant (in a vacuum) and effects that made seem otherwise were just that effect of things like relativity and gravity.

It is really hard to say, and in my opinion doesn't make much difference as long as you are consistent.

What I mean by this say I want to measure time as precisely as possible. How do I do that? I need to find two things that may never happen. I want to find the two events that are the closest together, but lets say these events only happen once in a billion years. Well it is going to be impossible for me to use them use them to measure anything else, because I can't get them to repeat while I compare them to other events. So I go for the smallest repeating events, as in repeating in the same (or approximately) time. But wait if I have an approximate time, then anything I measure is approximate. But wait! How do I know that this time is exactly the same amount of time apart, because I don't have anything more precise to measure if I'm off?

Well if I pick the fastest thing known and say it is a constant, and then say any variation you see isn't in light's speed it is the variation of what I'm measuring not light, who couldn't say I'm wrong since there would be no way to measure it more precisely.

And would if it were possible to turn off all the light in the universe would time stop? Well maybe, but only if turning off all light stops all events, as in light is so fundamental nothing could happen without it. But I could certainly conceive of that happening and events still going on.

I just thought of an easier way to say this look at these dots are they the same distance apart?

0___0__0_0_0__0___0

No? Well what if they were on a piece of paper that was curved?

Answer 2

Ooooh - no. The speed of light in other media than a vacuum has nothing to do with time. The relationship of time and speed is relevant on the atomic level. Particles that decompose into smaller particles or energy do so in much more time when they are traveling close to the speed of light.

The shutting off of light in the universe is a fantasy that doesn't have a real answer.

Answer 3

Think about it for a minute. Do you really think our government or any other government of the world would just sit by while some dude in small town USA is traveling through time.
Who do you think will have control of this technology anyhow, and how often do you think you'll ever get to use it in your life if that technology were available.
No, that will be a best kept secret, better than the Roswell secrets, the pentagon Papers, or Project Blue Book.

Answer 4

Dude, come on!!! Light is a speed measurement for sure no doubt about it!!! This time travel hype, it is all just hype!!! You can never travel in time it is all in Hollywood and those that wish they could use it to gain wealth or fix the stupid mistake they got theirself into!!! Just a dream and nothing else!!! Sorry to burst you bubble!!