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Theory of Relativity

To most people, one of the most intriguing and confusing branches of physics is Einstein's Theory of Relativity. Here you will find the information about both Special Relativity & General Relativity. Find out what the theory of relativity means and how to use it.
  1. Albert Einstein
  2. Time Travel (4)

Einstein's Theory of Relativity
An overview of Einstein's Theory of Relativity. Learn about special relativity & general relativity, including the Lorentz transformations that make them possible.

Books about Albert Einstein & Relativity
Albert Einstein is one of the most compelling figures in all of physics, and there are a wide range of books that explore his life and scientific achievements. This list, by no means comprehensive, demonstrates some intriguing resources for learning more about Albert Einstein.

Can Anything Move Faster Than the Speed of Light?
It's often said that the theory of relativity prohibits anything from moving faster than the speed of light. Is this really true? Find out what relativity really says about the speed of light.

Doppler Effect in Light: Red Shift & Blue Shift
Learn about the manifestation of the Doppler effect from a moving light source and how the observed light exhibits either a red shift or blue shift to the wavelength and frequency.

What Was the Michelson-Morley Experiment?
The Michelson-Morley experiment was a series of experiments that attempted to measure the motion of the Earth relative to the ether. Instead, it measured that the Earth did not move at all relative to the ether, indicating that something was wrong with the scientific idea of the ether in the 1800s.

NOVA: Einstein's Big Idea
This PBS Nova 2-hour special episode provides a narrative of how Albert Einstein developed his famous equation, E=mc<sup>2</sup>, from the origins of energy to Einstein's brilliant insight.

The Light Cone
This "illuminating introduction to relativity" provides a good breakdown of Einstein's theories of special and general relativity, as well as the history of physics that laid the foundation for it.

History of General Relativity
A history of the development of General Relativity, including the major scientists involved.

General Relativity
John Baez provides this useful introduction to Einstein's Theory of General Relativity.

Greg Egan's Fundamentals of Relativity
Greg Egan, science fiction author and computer programmer, provides this somewhat mathematical overview of Special and General Relativity.

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