When you are courting a nice girl, an hour seems like a second. When you sit on a red-hot cinder a second seems like an hour. That's relativity. Albert EinsteinLook deep into nature, and then you will understand everything better. Albert EinsteinTrying to understand the way nature works involves a most terrible test of human reasoning ability. It involves subtle trickery, beautiful tightropes of logic on which one has to walk in order not to make a mistake in predicting what will happen. The quantum mechanical and the relativity ideas are examples of this. Richard P. FeynmanThe theory of gravitation was discovered by Isaac Newton and relativity was discovered by Albert Einstein. So, people think that gravity came from the period of Newton and relativity from the period of Einstein. But fact is that gravity and relativity was there before human being came to this planet and will be there even after human species become extinct. The reality or fact is that Einstein put a natural phenomenon in mathematical terms, for clear understanding of human brain and utilize it for scientific purpose. This book is about how even a lay man who never heard about theory of relativity and Einstein, can easily understand relativity from his day-to-day life experiences.There is a famous story in Bagavat Purana as, "a king named Kakudmi went to Brahma-loka with his daughter Revati. As dance and music were going on, he waits for few minutes, and he greeted Lord Brahma and asked him to suggest a bridegroom from a particular family for his daughter. After hearing this Brahma laugh and told when you were waiting here 27 mahayug (43,20,000 X 27 = 11,66,40,000 human years) had passed on the Earth. There are three worlds referred very often in Vedas, they are: Deva-loka, Pitr̥-lok, and Bhu-lok(The Earth). But 14 worlds were mentioned in Puranas. Seven upper worlds and seven lower worlds. They are Satya, Tapa, Jana, Maha, Swarga, Bhuva, and Bhu(The Earth) are the seven upper worlds Atala, Vitala, Sutala, Talatal, Rasatala, Mahatala, and Patalaare the seven lower world. This time dilation was not only explained as a simple story but it was clearly described with its nine main variations, which is called as Navavida-kālamāna. It is written by ancient Indian astronomer, Varahamihira in his text Sūryasiddhāntaḥ. B) Navavida-kālamāna Names of nine types of time dilation mentioned in the text Surya-Siddhanta. they are: 1) Brahma,2) Prājāpatya,3) Divya,4)Pitrya,5)Gaurava,6)Saura,7)Sāvana, 8) Cāndraand 9)Nakṣatra
