Spacetime geometry

Curvature, embedding diagrams, and the global causal structure of Schwarzschild spacetime.

Validating the curvature engine: Einstein’s vacuum field equations

Validating the curvature engine: Einstein's vacuum field equations

Flamm’s paraboloid: gravity as curved geometry, not a force

Flamm's paraboloid: gravity as curved geometry, not a force

Kruskal-Szekeres and Penrose-Carter diagrams: the true shape of spacetime

Kruskal-Szekeres and Penrose-Carter diagrams: the true shape of spacetime