your opnion about time travel answer
Answers
Answer:
Let me start with your first question
What is time travel?
Ans. Time travel is the concept of movement between certain points in time
And now to your second question
Is it possible? How?
(This is going to be a lengthy answer so try to read till end. You'll definitely get your answer)
In science fiction, space and time warps are commonplace. They are used for rapid journeys around the galaxy or for travel through time.
But today's science fiction is often tomorrow's science fact. So what are the chances of time travel?
The idea that space and time can be curved or warped is fairly recent. For more than 2000 years the axioms of Euclidean geometry were considered to be self evident.
A way to describe curved spaces was developed by the german Bernhard riemann in 1854, it remained just a piece of mathematics for 60 years. It could describe curved spaces that existed in the abstract, but there seemed no reason why the physical space we lived in should be curved. This reason came only in 1915 when Einstein put forward the general theory of relativity.
General relativity was a major intellectual revolution that has transformed the way we think about the universe. It is a theory not only of curved space but of curved or warped time as well. Einstein has realised in 1905 that space and time are intimately connected with each other. One can describe the location of an event by four numbers. Three numbers describe the position of the event. The fourth number is the time of the event. Thus one can think of space and time together as a four dimensional entity called space time. Eaxh point of space time is labelled by four numbers that specify its postion in space and in time. Combining space and time into space-time in this way would be rather trivial if one could disentangle them in a unique way. This is to say if there was a unique way of defining the time and position of each event. Einstein showed that the time and postion at which one thought an event occurred depend on how one was moving. This meant that time and space were inextricably bound up with each other.
Although humans can't hop into a time machine and go back in time, we do know that clocks on airplanes and satellites travel at a different speed than those on Earth.
However, when we think of the phrase "time travel," we are usually thinking of traveling faster than 1 second per second.
Hope it helps...