Time Travel Is Not What You Think, Part-2

 

(source-google)

Hello future scientists, I am your uncle globe, back with the 2^nd part of our little discussion about Time Travel. Let’s start.

Firstly, let me tell you about a clerk of a patent office at Bren, a city of Switzerland. Every day, after completing his work, he used to take a tram to go to home. There was a big clock tower exactly at the opposite direction of that tram route. So, whenever he sits on a sit he can see that the clock tower is getting far away. This was happening every day until he realize one thing, He imagined, if this tram moves as fast as the light the he won’t see the second hand of that clock moving, he would see that the second hand is stopped. In previous article I told you how important the light is in terms of time. If light don’t reflect from every hands and numbers of a clock onto your eyes you won’t be able to see the time. The clerk thought that if he travel to the opposite direction of the clock tower at the speed of light, then the light carrying the visual information of the next move of second hand of that clock won’t reach to him, because the speed of the light coming towards him is the same to the speed of him getting far from the light. The distance between them will never decrease until someone of them slow down. So, we can say if you travel as fast as the light, you will experience that the time has stopped. Now you may wonder who was the clerk that discovered this fascinating fact about time? He was none other than Sir Albert Einstein. 

(source-youtube)

Now you may have another question in your mind that, what if we travel faster than the light? Do we see the same thing or something more amusing? let me tell you. If you have understood the previous experiment with clock tower, then the answer of this question is really simple to you. So, if you travel ‘faster’ than the light, you will see the time goes backwards. How? Because now, when you are faster than the light, you are not only going far away to the beams of light reflecting letter, you are also going near to the light beams reflected before you have started your journey from the clock tower. So that means we can see the past if we travel faster than the light. But every time while watching the past we are actually going far far away from the place or the person whose past we are watching. So it is nearly impossible to travel to the past, but it is possible to see the past ‘if’, a huge if, if we travel faster than the light. 

So at last we can conclude that it is possible to see the past but impossible to travel to it and it is possible to travel to the future but impossible to see it.

This is the end of our time travel talk series, but I will back with a new fascinating topic, till then good bye.