Relativity: The Special and General Theory by Albert Einstein Books Should Be Free

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Einstein wrote this book for people who are interested in understanding the Theory of Relativity but aren't experts in scientific and mathematical principles. I'm sure many people have heard about Einstein's Theory of Relativity, but most of them don't really know what it is all about. This book gives them a chance to know more about this very famous theory without the need to take a Physics course first.
This book is divided into three parts. The first part explains what special relativity is all about. The second part discusses general relativity thoroughly and the last part deals with the considerations of the universe as a whole.
The first part explains the principles of the special theory of relativity. Here the relationship between space and time are thoroughly discussed. The derivation of Einstein's most famous formula which is E = mc2 is also explained in this part in a very simple way. The second part which is about the general theory of relativity is about the generalization of the special theory, Einstein's thoughts about Newton's Universal Law of Gravitation and how they affect the space time continuum. The last part explains how the universe actually works on a cosmic scale. These things may sound too complicated at first glance but Einstein was able to explain them to his readers in the book without sounding too technical.
Reading Einstein's “Relativity: The Special and General Theory” may not sound very attractive at first. We've all heard of Einstein's equation but how many people can actually explain what it means. This book will elucidate all the iconic thoughts of Einstein without requiring a physics degree from the reader.