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Uc Riverside: Usenet Relativity Faq
A physics usenet listing of frequently asked questions relating to relativity, answered by a number of scientists. Administrivia and Reference, Speed of Light, Special Relativity, General Relativity and Cosmology, Black Holes. Loads of...
Nobel Media AB
The Nobel Prize: Albert Einstein Biographical
The Nobel Foundation provides this site of Albert Einstein. Includes biographical information about the scientist and other interesting sidebars, such as a video of George Bernard Shaw paying tribute to Einstein.
Bartleby
Bartleby.com: Einstein "Relativity: The Special and General Theory"
This page presents the actual text of Albert Einstein's book "Relativity: The Special and General Theory." Just click on the chapter titles to read the text.
University of St. Andrews (UK)
University of St. Andrews: General Relativity
A somewhat labored but thorough explanation of general relativity, beginning with Aristotle. Many links to the personalities connected to the article.
American Association of Physics Teachers
Com Padre Digital Library: Open Source Physics: Schwarzschild Light Impact
Visualization using the Schwarzschild metric, showing the path light travels near a black hole. Adjust the impact parameter and observe effective potential well of the light particle.
American Association of Physics Teachers
Com Padre Digital Library: Open Source Physics: General Relativity Embedding
Visualization of how space curves near a huge object.
Mocomi & Anibrain Digital Technologies
Mocomi: Theory of Relativity
Understand what relativity is and what Albert Einstein discovered while studying it. Identify special relativity and general relativity.