Have you ever wondered if time travel is possible or not? Yes you have thought but actually it is not possible according to many renowned scientists. Have you heard of the famous experiment by Stephen hawking to prove that travelling back in time is not possible in which he had invited time travellers the next day the event happened,but no one came and Hawking thus proved his thesis.
Still some follow Einstein’s concept of time dilation. According to the theory of relativity, time dilation is a difference in the elapsed time measured by two observers, either due to a velocity difference relative to each other, or by being differently situated relative to a gravitational field. As a result of the nature of spacetime a clock that is moving relative to an observer will be measured to tick slower than a clock that is at rest in the observer’s own frame of reference. A clock that is under the influence of a stronger gravitational field than an observer’s will also be measured to tick slower than the observer’s own clock.
Such time dilation has been repeatedly demonstrated, for instance by small disparities in a pair of atomic clocks after one of them is sent on a space trip, or by clocks on the Space Shuttle running slightly slower than reference clocks on Earth, or clocks on GPS and Galileo satellites running slightly faster. Time dilation has also been the subject of science fiction works, as it technically provides the means for forward time travel.
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