And The General Theory,... | Relativity: The Special

Read the full text at the Project Gutenberg or Marxists Internet Archive.

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Einstein explicitly wrote this for those without advanced mathematical training, using only high-school algebra to illustrate his points.

The book is divided into three main parts that build from the basics of motion to the grand structure of the cosmos: Read the full text at the Project Gutenberg

Einstein breaks down the conventional idea of "absolute time". He introduces the Principle of Relativity , which states that the laws of physics are the same for all observers moving at constant speeds, and the fact that the speed of light is constant regardless of motion. This leads to the famous conclusion that time and space are relative and linked as "spacetime".

Einstein's Relativity: The Special and the General Theory is one of the most significant works in scientific history, written specifically to explain his revolutionary ideas to the general public. Originally published in German in 1916, it remains a primary text for anyone looking to understand the universe through the eyes of its creator. The book is divided into three main parts

The text is famous for its "Gedankenexperimenten" (thought experiments), such as observers on moving trains and flashes of light, to make abstract concepts concrete.