Near-field scattering of light rays by two black holes, with a cutoff radius isolating the interaction
Displays a fan of null geodesics deflected by two extremally charged black holes in a Majumdar-Papapetrou spacetime. Rays within a cutoff radius experience the curved MP metric while those outside travel in straight lines, allowing focus on the near-field gravitational scattering. Interactive controls adjust the beam direction, angle, number of rays, thickness, and spread.
Controls: Click and drag to orbit, scroll to zoom.