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.
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,...
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 This section expands relativity to include gravity
Einstein applies his theories to the entire universe, discussing its potential shape and whether it is finite or infinite. Key Features for Readers Relativity: The Special and the General Theory,...