Why did the common belief,"you can travel in time when you travel faster than light" arise?

Question

I simply can't figure it out. Please answer me.

Answer 1

relativity shows that as you travel faster time slows down, as you approach the speed of light time slows more and more, at the speed of light time stands still. If you can break this cosmic speed limit time will reverse.

Answer 2

The Lorentz transform equations of special relativity actaulkly shows that the proper time along the length of a moving object is skewed relative to a stationary observer, and this would be "how can on travel through time if faster than light travel was possible".

Let's say there's a long train moving at a steady speed on tracks, and I'm an observer on the ground looking at the train. I take pictures of the passengers inside the windows, and I notice that at exactly noon my time, the watches of the passengers at the back of the train shows 1:00 pm, while the watches of the passengers at the front of the train shows 11:00 am. This is what the Lorentz transforms will actually show, if the train was moving fast enough. Now, suppose that a passenger on the train at 11:00 am train time walked from the front of the train to the back of the train, arriving there well before 1:00 pm train time. Then he steps off the train and gets into my hyperspeed car on the ground, and we both go to the front of the train before it has moved very far. He will then be returning to the front of the train at around 11:00 am train time, thus having "travelled to the past" in train time. This is only possible if my hyperspeed car can travel faster than light. If it can only travel at the speed of light, then it works out that he can't really travel backwards in time in this way.

Answer 3

The usual assumption of the Lorentz transformation of special relativity is that mass is a real positive number. However, if you assume that mass of a particle, say, is *imaginary*, the implication is that the particle must travel faster than the speed of light and backwards in time. Such hypothetical particles (called tachyons) have never been observed, but are popular in science fiction, and have resulted in at least one limerick:

There once was a spaceman named Dwight,
who, it's said, could go faster than light.
He left home one day
in a relative way,
and returned on the previous night.

Answer 4

Because all the information that we receive and thus our very concept of time is based on the speed of light. So, if we can somehow travel faster than light, we can travel back in time or forward.

Answer 5

This is a wrong hypothesis.

Base on false assumptions.

Time travel is not possible. Because time itself moves forward only.

This is why one cannot travel back or forward in time.

Only true psychics can travel forward and backward. Human mind is amazing, normal human does not use even 5% of its total available capacity.

Human thought process only goes at those speeds, that too very few are bless with it.

Answer 6

special relativity shows us that time "dilates" at high speeds. basically, if you travel close to the speed of light, your time goes much slower than others'. so if you travel close to the speed of light for a year or so and come back to earth more than a year will have passed. time is not fixed as it appears to be. you can find more information on the phenomenon if you look up the "twin paradox" online or special relativity. this phenomenon has been experimentally confirmed, by the way.