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. The experiment will check, very precisely, tiny changes in the direction of spin of four gyroscopes contained in an Earth satellite orbiting at 400-mile altitude directly over the poles.

NOVA presents a profile of Albert Einstein, with additional teaching resources, Shockwave demonstrations, and animations of relativity concepts.

General relativity Mathematical Physics index History Topics Index General relativity is a theory of gravitation and to understand the background to the theory we have to look at how theories of gravitation developed. Aristotle's notion of the motion of bodies impeded understanding of gravitation for a long time. He believed that force could only be applied by contact, force at a distance being ...

Online publication of the 1920 edition of Albert Einstein''s Relativity.

Ricci A Mathematica package for doing tensor calculations in differential geometry Version 1.36 Last Updated July 26, 2002 Ricci is a Mathematica package for doing symbolic tensor computations that arise in differential geometry. It has the following features and capabilities: Manipulation of tensor expressions with and without indices Implicit use of the Einstein summation convention Correct ...

Learn about Einstein's Theory of Relativity Online. Find out how the universe began and how it will end.

Interactive Experiments in Gravity This directory contains documents and interactive Java applets which explore aspects of both Newton's theory of universal gravitation and Einstein's general relativity. The first two installments in the series are now available. Bending Spacetime in the Basement We live our entire lives within the Earth's gravitational field, yet rarely if ever do we experience ...

This page is maintained by Sanjeev Seahra Last modified: February 01, 2002 ...

Relativity The listings are in roughly the order in which these topics might be taught. Topic Description Author Format Special Theory of Relativity: html pdf The Special Relativity document by Professor Key that is the next listing largely concentrates on the effects predicted by the theory, such as time dilation, length contraction, etc. This document is considerably longer than Professor ...

The 4-dimensional space-time is no longer necessary to explain relativistic effects ...

A portion of Number 454 ...

The time delay of radar reflections off of Mercury installation 1995 For Folks It takes a few minutes for light to get to Mercury from Earth, but it takes a little longer due to the Sun. Radar signals from the Haystack Observatory in Westford Massachusetts were sent out into space to bounce off Mercury. The time the radar signals spent flying between the two planets was carefully measured.

General Relativity and Quantum Cosmology, abstract gr-qc/9807044 From: JANCEWICZ Bernard BJAN@proton.ift.uni.wroc.pl Date: Fri, 17 Jul 1998 11:28:37 GMT (5kb) Answer to Question 55: Are there pictorial examples that distinguish covariant and contravariant vectors Authors: Bernard Jancewicz (University of Wroclaw) Comments: 4 pages in LaTeX, two figures We present pictorial means of ...

Physics, abstract physics/9908041 From: Indrajit Chakrabarty indrajit@mri.ernet.in Date: Sat, 21 Aug 1999 12:54:07 GMT (19kb) Gravitational Waves: An Introduction Authors: Indrajit Chakrabarty Comments: Lecture notes presenting an elementary introduction to the theory of gravitational waves. To be submitted to Resonance, Journal of Science Education with a lesser mathematical content. For ...