Can Time Be Reversed by Traveling Faster Than Light?

[ubergewehr273]

Is it possible to reverse time?
According to special relativity, time slows down as one approaches the speed of light and completely stops when one travels at the speed of light, which is exactly $c$. Then if one travels faster than the speed of light, is it possible that time will reverse or rewind ?

 

[Vanadium 50]

One cannot travel faster than light.

 

[Doug Huffman]

Nor can time be reversed. Time is not space like.

 

[ubergewehr273]

I just proposed that in a hypothetical scenario, if one could travel faster than light speed then is it possible for time to get reversed ?

 

[Doug Huffman]

If, in your FTL time-vessel, you had broken a tea cup, when precisely would it reassemble itself? The arrow of time is the arrow of cause and effect.

 

[Vanadium 50]

I just proposed that in a hypothetical scenario

If you're just going to make stuff up, you can make up anything you like. What would happen if squares had five sides? What would happen if people had wings? Unfortunately, when you do so, you have left the realm of science.

 

[GTOM]

Well c and speed of light or phase or group velocity of light isn't the same.

http://en.wikipedia.org/wiki/Cherenkov_radiation

Otherwise there is already a topic about that in the SF section.

 

[Doc Al]

Unfortunately, when you do so, you have left the realm of science.

On that note, it is time to close this thread.