🌟 Pulsar Beacon - 2D P-Pdot Diagram, Lighthouse Geometry and Spin-Down

2D companion of the Pulsar Beacon simulation: the pulsar period-period-derivative diagram with lines of constant age and magnetic field, lighthouse beam geometry with pulse profile and duty cycle, and spin-down evolution with numerical checks against the Crab pulsar.

2D · HTML5 Canvas 2D · 60 FPS target · runs fully client-side, no install