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

A full audio version is hosted by LibriVox for listening on the go. Relativity: The Special and General Theory

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

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

Because the original work is in the public domain, you can find it for free or as high-quality reprints: Relativity: The Special and the General Theory,...