Articles

Solving Einstein's Equations in Three Dimensions - Mathematica notebook showing how to plot light cones in two plus one spacetime dimensions with a point mass. By Patricia Schwarz.
www.theory.caltech.edu/people/patricia/test/Einstein3.html#Einstein31

Why Time is Absolute, and Relative, But Never Universal - Article by Vincent Sauvé elaborating upon a materialist view of the absolute and relative nature of time.
home.pacbell.net/skeptica/time.html

Gravitomagnetic Effects - Introductory article by Gerhard Schäfer (Jena University) about the ways that rotating bodies affect spacetime (and hence the propagation of light and particles in free fall) in their vicinity. <small>(July 30, 2004)</small>
arxiv.org/abs/gr-qc/0407116

Inertia Manipulation Through Metric Patching - E-print which presents the exact solution for the stress-energy tensor of a spherical matter shell of finite thickness that will patch together different metrics at the boundaries of the shell. By David Waite. <small>(June 2, 2001)</small>
arxiv.org/abs/gr-qc/0106003

Are There Pictorial Examples of Covariant and Contravariant Vectors? - Present pictorial means of distinguishing contravariant vectors (or simply vectors) from covariant vectors (or linear forms). By Bernard Jancewicz (University of Wroclaw). <small>(July 17, 1998)</small>
arxiv.org/abs/gr-qc/9807044