is there something like time machine,can it be ever built?can we travel to future?

Question

if we can travel ,move faster than light can we go back in time or go to the future using the so called time machine?can we know the future by using it?if it is possible then what about theory of relativity?

Answer 1

Below is an answer I submitted to the question "Is time travel possible"? In addition to this, Time, Size, and Mass will all seem normal for those in their own reference frame. These entities would seem peculiar, for example, if earthlings could somehow see (see in another reference frame outside their own) the people traveling close to the speed of light. The Earthlings would see the travelers shrink, become more massive, and notice that their clocks were running significantly slower. The following is a a brief description of time , the 4th dimension. I hope this helps.

Yes, one aspect of time travel is theoretically possible. That is to say, according to Einstein's Special theory of relativity it is possible to travel into the future. How far in the future in a given time span depends how close to the speed of light you accelerate. Traveling at 80% of the speed of light according to Einstein's formula y=1/ Sqrt 1-v^2/c^2 ,(v=velocity, c= speed of light) the clocks on Earth will advance 1.667 times faster than the one traveling in space. Therefore, after a twenty year journey by the space travelers, (20 yrs time has elapsed by the travelers account) upon their return, there will have passed on earth 33.4 years.
At 98% of the speed of light, 20 years of travel at this speed, upon return, 100.4 years will have passed on earth.
This is the equivalent to traveling into the future, which is a form of time travel. Therefore time travel is theoretically possible. In fact, check out this site as the guy proclaims that we will be able to approach speed of light travel within 100 yrs.
http://www.physorg.com/news10789.html......
Traveling back in time is debatable, as you would have to be able to exceed the speed of light to do that.
Plug in the numbers to this formula. speed of light c= 186,000 miles per second. For velocity, just multiply this number from .01 to .9999. Then just follow mathematical operations.
good luck

Answer 2

Actually, there are loopholes in physics that would allow for "time travel". However, one must remember if such a thing were possible there are a number of paradoxes that would prevent us from interacting with it in any way. We could observe, but couldn't interact because we'd be experiencing what had already taken place (future or past). Observing the future would actually be more difficult than the past. Because as an object reaches the speed of light it regresses in time. To travel to the future one would have to bend timespace by other means than solely speed. It would entail distorting timespace dynamically.

Answer 3

I like this question. I love answering it. Their is nothing such as a time machine and it can never be built. It's because time cannot be stopped or traced back. if you go back to the time 1 day back, a trillion changes could happen. It might be possible that you will be invisible when traveled in a time machine. no one can see you, hear you, talk to you, or feel you. How? it's because after time is finished, where does it go? and besides, (Religiously speaking) onlygod has the power to change time.

Answer 4

Well, according to some, it is quite possible, that time and space are one, weaved around each other. Some big bodies in the universe can apparently effect the space/time around them. Of course, it would take an enourmous amount of energy to timetravel..... One way would be to create a hole in time/space and travel through it to another place in time/space.

Answer 5

Possible

U cant waive off the question totally

Its always a possibility . When man has done wonders which were once said impossible, this is no different.

Regards,

ALMIGHTY

Answer 6

We might be able to do that sometime....but it might also be impossible!