In the year 1905 a clerk at a patent office declared “Nothing can move faster than the speed of light”.
In 1915 he again declared “Space and Time can be bend”.

He was none other than the theoretical physicist and greatest scientist of the 20th century Sir Albert Einstein. The first statement is the essence of special theory of relativity which he published in that year. The second statement is the essence of the general theory of relativity. The book is all about what these two statements mean to us.

The write-up is designed to develop the imagination of the reader in order for him to understand the real meaning of the relativity principle. It is a challenge to make students understand such a subject which is far removed from their daily experience. Author has presented it in a very simple and logical manner so that anybody with knowledge...