Theory of Relativity

Summary

Albert Einstein's Theory of Relativity consists of two parts: Special and General Relativity. Special Relativity (1905) established that the laws of physics are the same for all non-accelerating observers and that the speed of light in a vacuum is constant. This led to the revolutionary idea that space and time are intertwined into a single continuum known as spacetime. General Relativity (1915) is a theory of gravitation, proposing that massive objects cause a distortion in spacetime, which is felt as gravity.