Time Travelling is the question that is a mystery for all scientists in the world. Before the theory of relativity given by Einstein, Time is considered to be absolute. This means that the speed of time is the same in each and every corner of the universe. But Einstein discards this theory and says that Time is relative. Thus, Einstein stated the presence of the 4th dimension or Space-Time dimension as Time and Universe are relative. Moreover, he predicted that Time can be changed. For more information on this, you can read the three articles published on this website about time travel.
So, according to Einstein, one can travel in time. However different ways of Time Travel are designed. But according to him, one can travel in the future easily, but traveling in the past cannot be possible. However, many scientists still believe that traveling in the past can be possible. Also according to Stephen Hawking, if in case one can travel back in time by making a time machine. But in that case also, one cannot travel back beyond the date when the time machine was not made.
Gravity
Gravity is one of the ways of time travel. This theory is also given by Einstein. According to this law, the stronger is the gravitational force, the lesser is the speed of time. As we move towards the center of Earth, gravitational force increases. A study by NIST (National Institute of Standard & Technology) was done by keeping two nuclear watches on shelves at a difference of 33 cm. They noticed that the watch kept on the lower shelf is running slower than the upper one. As the gravitational force, there is stronger.
Wormholes
Wormholes are basically the shortcut to travel in time. Due to the existence of the Universe for many years, some wormholes are created in the Universe. These wormholes however are very small. But if someone can create or extend these wormholes in such a way that one can travel through it.
Speed
If we are talking about the most convenient way to travel in time, then we must consider speed. According to Einstein, if we can travel at a speed nearer to the speed of light. You can overcome the speed of time easily and for you, the time will travel much slower than the outer world. This is known as “Time Dilution”.
Light
According to an American Scientist, Ronald Mallett, we can turn space-time with the help of a rotating cylinder of light.
Suspended Animation
According to this theory, we can travel in time if we can slow down the physical & biological activities or time and restart them after some time. Then one can travel in time.
By:-
Prakhar Sharma
Founder, Upgrading India
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