Relativity

Introduces a new concept of weight which distinguishes between self-weight and acquired weight and subsequently leads to a new definition of gravity, based on the assumption that all subatomic particles have a "mass-energy field". By Elie Agur.

Review article by Clifford Will, published in Living Reviews in Relativity. Gives a complete survey of tests of general relativity using laboratory experiments and astronomical observations.

Lecture notes by Ramesh Narayan (Harvard-Smithsonian Center for Astrophysics) and Matthias Bartelmann (Max Planck Institute for Astronomy) about the basic concepts and applications of gravitational lensing.

Explains how gravitational lensing can be simulated using wine glasses as (unusually-shaped) glass lenses. Includes images and diagrams to explain the different phenomena gravitational lensing can produce. By Phil Marshall (Stanford University).

Members, research, thesis, proceedings, LCGT Project, information, and links. At the Institute for Cosmic Ray Research, University of Tokyo.

Identifies the contributions made to the special theory of relativity by Poincaré and argues that the theory "has been created not by A. Einstein only but even to a greater extent by Poincaré." By A. A. Logunov.

About the development of general relativity, Einstein's early rejection of Lorentz-covariant theories of gravity, and Nordström's attempts at formulating just such a model. By J. D. Norton (University of Pittsburgh).

Features links to relevant conference announcements, brief descriptions of research areas, staff list and a publications index. Research interests include quantum gravity, the physics of black holes, cosmology, and numerical relativity.

Includes lists of staff, publications lists, visitor information and event announcements, as well as brief descriptions of the research undertaken, which concentrates on gravitational wave physics, quantum gravity and the physics of black holes.

Theoretical AstroPhysics Including Relativity; includes information about group members, research topics and opportunities, seminars, and publications. Research topics include compact objects, cosmology, numerical relativity, and gravitational waves.

A mesh refinement driver for the Cactus code; the primary application is the simulation of black hole spacetimes.

Provides a set of C++ classes to solve various problems arising in numerical relativity and other areas of computational astrophysics.

The general problem of relativistic addition of velocities – and the successive application of noncollinear Lorentz boosts – is addressed.

This is chapter 1 of a book by Chris Doran and Anthony Lasenby on geometric algebra, which is the natural mathematics of spacetime.

There is a preferred algebra of quaternions and complex numbers that is ideally suited to express the equations of special relativity and classical electrodynamics.

Self-tutorial with short essays, questions and answers.

Download Christoph Schiller's 1612 page walk through the whole of physics, from classical mechanics to relativity, electrodynamics, thermodynamics, quantum theory, nuclear physics and unification. chapter 2 explains special relativity.

Pages on the website of the Chandra X-Ray Observatory; includes information about stellar, mid-mass and supermassive black holes, Chandra images, and a podcast.