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Relativity

Classical mechanics generalized (extended) to realm of high velocities (special relativity), and strong gravitational fields (general relativity). In particular, the theory that time and space form a single 'spacetime' which is curved in the presence of energy and mass.

Sites in Relativity

QMW Hyperspace
A set of hypertext based services for general relativity research provided by the QMW Relativity group.

Relativity bookmarks
Rob Salgado's bookmarks

General Relativity Simulation Contest
The purpose of this Contest is to prove General Relativity using a (simple) algorithm.

Relativity Forum
Forum devoted to discussing the Einstein's special and general theories of relativity.

Ricci
A Mathematica package for doing tensor calculations in differential geometry and general relativity.

NOVA Online/Einstein Revealed
Profile of Albert Einstein, with additional teaching resources, Shockwave demonstrations, and animations of relativity concepts.

Gravitational Lensing
A popular site with interactive demonstrations of gravitational lensing. The background material is at a graduate level

Shapiro Radar Bounce Test
A two part overview of the Shapiro radar bounce test of general relativity. (The two parts consist of a section for normal people, and one for nerds)

Hyperspace at the University of British Columbia
Includes links to online journals, news and preprint archives, as well as lists of faculty at this university.

Southampton GR Explorer
An introduction to Einstein's theory of General Relativity and related topics. These pages include informative text, pictures and movies.

Solving Einstein's Equations in Three Dimensions
This is a Mathematica notebook showing how to plot light cones in two plus one spacetime dimensions with a point mass.

Interactive Experiments in Gravity
Try an experiment that illustrates the gravitational attraction between two objects or use a Java applet to understand how orbits work in strongly curved space-time.

Gravity Probe B
Gravity Probe B is the relativity gyroscope experiment being developed by NASA and Stanford University to test two extraordinary, unverified predictions of Albert Einstein's general theory of relativity.

Physics Bookshelf - Relativity
A collection of articles about relativity

Gravity of Gravity
An experiment at the University of Washington seeks to determine whether the gravitational binding energy of an object generates gravity of its own.

The 5D Spacetime Consortium
We are a group of physicists and astronomers working on a 5-dimensional version of general relativity.

Derivation of gravitational waves in Einstein, Brans-Dicke and Rosen theories of gravity.
Mathematical derivation of gravitational waves to quadrupole order in the Brans-Dicke scalar-tensor and Rosen bi-metric theories of gravity.

Gravitational Waves: An Introduction
This paper presents an elementary introduction to the theory of gravitational waves. This article is meant for students who have had an exposure to general relativity, but results from general relativity have been derived in the appendices.

Are There Pictorial Examples of Covariant and Contravariant Vectors
We present pictorial means of distinguishing contravariant vectors (or simply vectors) from covariant vectors (or linear forms).

Handbook of Space Astronomy and Astrophysics - Relativity
A collection of equations important to both special relativity and general relativity.

An Essay on General Relativity
This site contains a comprehensive introduction to the basic ideas and tests of general relativity

The Special Theory of Relativity
Self-tutorial with short essays, questions and answers.

The Cosmological Constant
An overview of why Einstein added an extra term in general relativity, and why it is still examined.

Experimental Gravitational Physics Using Drag-Free Satellites
Covers current and past projects in experimental gravitational physics using Drag-Free Satellites including the Relativity Gyro, Equivalence Principle, and LISA.

Relativity
Provides information on the history, experiments and paradoxes of relativity.