Relativity: The Special And The General Theory,... Apr 2026

Einstein applies his theories to the entire universe, discussing its potential shape and whether it is finite or infinite. Key Features for Readers

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". Relativity: The Special and the General Theory,...

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

Because the original work is in the public domain, you can find it for free or as high-quality reprints: This leads to the famous conclusion that time

This section expands relativity to include gravity. Einstein describes gravity not as a force between objects, but as a curvature of spacetime caused by mass and energy. He uses the "Principle of Equivalence" to show that being in a gravitational field is indistinguishable from accelerating.

The book is divided into three main parts that build from the basics of motion to the grand structure of the cosmos:

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.