In Relativity by Albert Einstein you are given a straight forward presentation of the original theory by the genius himself in the way it was meant to be. The information is given in the clearest, most straight forward way possible. In 1905 Einstein took the known and accepted notions of time and space and turned them on their heads with the publication of his theory of relativity.
The book itself is quite short despite the amount of information it packs into the pages, about 96 pages in length. Depending on your reading and comprehension skills you can read through this in a day easily. Whether or not you understand everything the first time around is another matter though. Even if the book was written with the common man in mind, the theories and explanations are no less impressive.
This book can be found free to download here, where you can download it via two options. You can either download it in Podcast format for your iTunes and iPod or you can download the chapters in Zip format if you want.
The reading itself is done by a woman who reads this book with just the right enthusiasm. It is neither overly excited or rushed. Nor is it done in a flat monotone that will put you to sleep rather than keep your attention. It is very pleasant to listen to and the quality is moderate.
