I still dont see how time is dependent on space?

Question

Everyone says the big bang "created time". Apparentley, time speeds up or slows down depending what velocity one is going when one is observing time . Maybe they mean earth time? Because one second is one second, regardless if you are standing still of going at the speed of light?

And I still dont believe that a) there was no "time" before the big bang....the big bang was caused by something that must of been previously gathering energy...so there would be the "time" it took to do that.......and b) time is not going to run out. For us, yes, but just because no one is around, time will still pass, and the seconds will still pass....even if no one is counting them?

Thoughts?

Answer 1

Wow, people are jumping all over you.



I get what your saying...we based our time on 24 divisions of the day. A day is based on the revolutions of the earth, the year is divided by the 12 months of the year and it's based on the earth's orbit around the sun. follow me?

If the earth spun just a little faster, but we still divided into 24 hours then the hour would have a shorter period and also the minute and second. Got that. Ok.

do you see how speed can influence time?



Einstein's theory basically said that if you face a clock and are traveling away from the clock the light traveling to your eyes will take longer and longer to get there. The faster you go the more time is needed for that light to show you that the next second has advanced. If you could go the speed of light away from the clock the clock hands will appear to stop because the new light of the next second cannot reach you.



even though there was no "time" prior to the big bang there still is the concept of a before because we apply our idea of time the that point.

Answer 2

Your question is different from your details.



Question: time is dependent on space because without space we could not have time. If there was no matter, how could we observe matter changing location through time? Without matter, we cannot have time. One second is actually the length of one halflife of an atom of cesium. Time is measured by matter.



Details: the big bang actually does not claim to have started time... if you research enough, you will find that we can only go back as far as roughly 3 billionths of a second after time began. Don't ask me how, I don't know how, but that is what the theory states. A more common theory nowadays is the inflation theory. This states that matter expanded from a single, condensed point. It could coexist with big bang, however it does not have to coexist with big bang.



Hope I cleared some things up for you.

Answer 3

No, everyone does not say that the big bang created time. That is Steven Hawking's idea, but not all physicists are inclined to agree with him.



An observer (call him "A") who regards himself as stationary sees the time of a moving observer (call him "B") slow down as B speeds up. But B experiences time to pass at the same rate no matter how fast he is moving. But who is "really" moving? According to Einstein, this question makes no sense. B can justifiably call himself the stationary observer as he watches A move past him. And while A sees B's time slowing down, B will see A's time slowing down. But neither observer will experience any change in his own time.



When the entropy of the universe, that is to say the amount of disorder in the universe, reaches a maximum far in the future, time will cease to exist.



Your question about the dependence of time on space is another issue. To say that time is dependent on space is to say that time is dependent on the curvature of space, and only one thing can cause space to curve: gravity. In fact, according to Einstein, gravity is the curvature of space, and the curvature of space is gravity. The more space curves, the slower that time passes from the point of view of an outside observer. But a person in an intense gravitational field (highly curved space) will notice no change in his own time. He will, however, notice that time outside his gravitational field speeds up.

Answer 4

Rachel, you may want to go to the science, astronomy and space section. R&S is a very proud and cynical place, unfortunately. It's hard to understand "no time" or how 1 second can be split into 1/10,000 of a second, etc... and how time slows down as you approach the speed of light. As you said, how is space made up of 'spacetime?' Basically our existence is one of 3 dimensions of space, and 1 of time. But I've heard of "timespace" where there are 3 dimensions of time, and 1 of space! Crazy stuff... I've also heard that our existence in this world of matter required time to slow down, but the reality is timelessness. If that's true, all light fills the universe, and is everywhere at once, but we perceive it to be going only 186,000 miles per second, since we're slowed down to be able to move around in a physical world. Have you read Stephen Hawking's books?

Answer 5

Space

The Final Frontier

that is the SPACE

between Human Ears!

Answer 6

So just because you don't believe it, it must be wrong? Ego much?



Relativistic time dilation has been proven again and again by accurate measurements using atomic clocks, it doesn't need your validation.

Answer 7

Sorry but time is relative whether you believe it or not. It has been proved and demonstrated...



IMHO

Answer 8

"I don't understand it so it's wrong".



Grow up.