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

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

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 book includes appendices on the Lorentz transformation and experimental confirmations of his theory, such as the bending of starlight during a solar eclipse. Where to Access It Einstein applies his theories to the entire universe,

Einstein explicitly wrote this for those without advanced mathematical training, using only high-school algebra to illustrate his points. He uses the "Principle of Equivalence" to show

Because the original work is in the public domain, you can find it for free or as high-quality reprints:

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

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