Two light cones in a binary black hole spacetime, showing how causal structure varies with position
Shows two null geodesic light cones emanating from different spacetime points in a Majumdar-Papapetrou metric with two extremally charged black holes. The geodesic equations are integrated with a symplectic integrator, and each cone is rendered as a parametric surface with a tube-geometry tip. Path tracing provides physically based illumination of the curved surfaces.
Controls: Click and drag to orbit, scroll to zoom.
