General realtivity
Gives you breif about the general theory of relativity.
Einstein was fascinated by the theories of Newton though when he studied how Newton discovered gravity, he was not convinced. Thus he was thinking while looking out of the window. He imagined a person falling of the roof. While falling the person would not feel his own weight. But if he was falling inside the elevator as someone must have cut the cable, The person would stay in the middle and would counter the inertial force. Thus he said that gravity was not a force exerted by earth but by the space.
The Special theory of relativity
Gives you breif about the general theory of relativity.
When Einstein published this theory, he changed the way the world looked at space. When he was going in a bus, he saw the famous clock tower. Then he imagined himselves travelling at the speed of light. He realized that if this would be possible then the hands of the clock fixed on the clock tower would appear stationary. This is because the rays of ligh comming from the clock tower would not be able to catch up with as light cant accelerate untill it changes medium.
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