What's faster than light? That is future? Or past?

[YoshiKid54]

Because part of the Earth faces the sun, the other side faces away from the sun.

[Worst_master]

Because part of the Earth faces the sun, the other side faces away from the sun.

Have you hear, is that just the different place, same tome?

[YoshiKid54]

That's how time zones were created. Go to a place to another and the time changes. But I wonder if you go there as quick as possible... I think the time would change even quicker.

[Worst_master]

That's how time zones were created. Go to a place to another and the time changes. But I wonder if you go there as quick as possible... I think the time would change even quicker.

No, I mean is it the same time, that mean is that I am sleep, you are goin to school, but that's the same time, different time zone.

[Doram]

I think we've lost track of the fact that the question specifically asks about faster than light (FTL) travel.

Einstein's theories outright said that FTL is impossible, thus making the effects of FTL undefinable. The reason that you cannot go faster than the speed of light is that it takes increasing amounts of energy to accelerate the closer you get, because there is a mass increasing effect, and you hit infinite mass (requiring infinite energy) before you actually hit light speed. The only reason light can do it is because (as far as we can tell) light has no mass (0 times infinity is still 0).

Einstein also proved that moving at any speed produces a time dilating affect on the observer, although it is fractions of a second for anything less than phenomenal speeds... like approaching the speed of light. I heard recently that if a train went at 99% the speed of light for 100 years, the occupants of the train would have only experienced a week. That is the only provable time travel that we know of. (Those calculations have been proven time and again, and actually prove quite useful for the large distances and speeds involved in using satellites for communication and data transmission, since those fractions do add up...)

Back to FTL, quantum theory allows it theoretically, through wormholes, but it is a workaround, not a true surpassing of the speed. You are simply moving through some other undefined space to another point in the universe faster than you would be able to if you traveled there within the confines of the universe (which is restricted to under the speed of light). This is defined the easiest way in considering that space is like a big sheet of fabric that you can wrinkle and fold, thus bringing distant locations on the sheet right next to each other. This is technically like moving into the past, since any information or people in the universe, confined to move within the universe, are essentially separated by time in the form of the time required to travel the distance between them.

Thus moving to a point 1 light year away through a worm hole, while a signal is sent at the same time at the speed of light, you would arrive instantaneously to the time the signal was sent, but it would take a year to receive the signal, meaning that the information can only be shared at the destination a year later in time, like you went 1 year into the past. Unfortunately, it does not have much meaning, since the situation would be reversed going back (if you went through the wormhole, waited a minute, then came back, only 1 minute would have passed on Earth, since both spots are moving forward in time at the same speed), so you couldn't travel in time in the same spot, only over distances.

I love Quantum Physics...

[YoshiKid54]

Wormholes? I don't think they existed.

[Worst_master]

I think we've lost track of the fact that the question specifically asks about faster than light (FTL) travel.

Einstein's theories outright said that FTL is impossible, thus making the effects of FTL undefinable. The reason that you cannot go faster than the speed of light is that it takes increasing amounts of energy to accelerate the closer you get, because there is a mass increasing effect, and you hit infinite mass (requiring infinite energy) before you actually hit light speed. The only reason light can do it is because (as far as we can tell) light has no mass (0 times infinity is still 0).

Einstein also proved that moving at any speed produces a time dilating affect on the observer, although it is fractions of a second for anything less than phenomenal speeds... like approaching the speed of light. I heard recently that if a train went at 99% the speed of light for 100 years, the occupants of the train would have only experienced a week. That is the only provable time travel that we know of. (Those calculations have been proven time and again, and actually prove quite useful for the large distances and speeds involved in using satellites for communication and data transmission, since those fractions do add up...)

Back to FTL, quantum theory allows it theoretically, through wormholes, but it is a workaround, not a true surpassing of the speed. You are simply moving through some other undefined space to another point in the universe faster than you would be able to if you traveled there within the confines of the universe (which is restricted to under the speed of light). This is defined the easiest way in considering that space is like a big sheet of fabric that you can wrinkle and fold, thus bringing distant locations on the sheet right next to each other. This is technically like moving into the past, since any information or people in the universe, confined to move within the universe, are essentially separated by time in the form of the time required to travel the distance between them.

Thus moving to a point 1 light year away through a worm hole, while a signal is sent at the same time at the speed of light, you would arrive instantaneously to the time the signal was sent, but it would take a year to receive the signal, meaning that the information can only be shared at the destination a year later in time, like you went 1 year into the past. Unfortunately, it does not have much meaning, since the situation would be reversed going back (if you went through the wormhole, waited a minute, then came back, only 1 minute would have passed on Earth, since both spots are moving forward in time at the same speed), so you couldn't travel in time in the same spot, only over distances.

I love Quantum Physics...

I know, thank you for your super long useful post, don't post like some guy like spamming unfitting things.And then, what is Einstein?I translete it to chinese and I know, a very very smart people in the past, it is famous.

You said FTL is impossible, yah, but it is just in our known space, not the whole space, I think that every thing is possible.
If that we fster than the light, why we will go to future? we can't see anything becasue we faster than the light, it bring dark? We get go to future, but we don't know another people go to where, that's mean go to future can change the time from you go to future to you go to that time?
If we can go to future, can we go back to past?

[YoshiKid54]

Einstein is a smart guy. He must have created this stuff.

[Worst_master]

Einstein is a smart guy. He must have created this stuff.

Well, but that mean if we didn't FTL, we can't go to F?

[Doram]

And then, what is Einstein?

Albert Einstein, father of modern physics, scientist, philosopher, and all-around genius. Formulated the equation on which nuclear power and the nuclear bomb are based (E=mc²).

EDIT: Yes, language barrier can suck. No problem.

You said FTL is impossible, yah, but it is just in our known space, not the whole space, I think that every thing is possible.
If that we fster than the light, why we will go to future? we can't see anything becasue we faster than the light, it bring dark? We get go to future, but we don't know another people go to where, that's mean go to future can change the time from you go to future to you go to that time?
If we can go to future, can we go back to past?

Much on faster than light travel and time travel has been mathematically explored by modern physicists like Stephen Hawking. You might benefit from reading the entry on faster-than-light on Wikipedia as well. I'm falling asleep, so I'll not do the research for you on this last bit, but look up the application of the uncertainty principle on subatomic particle pairs violating the lightspeed limit when determining spin. Schrodinger's cat bites Einstein in the butt on that one... There is a lot of interesting stuff to Quantum Physics.