Black Hole Simulator
Send light past a black hole and watch its path bend. Each ray is a real path through curved spacetime, so close rays wrap round the photon sphere or fall in. Drag a clock towards the horizon and see it fall behind a distant one.
What you can do
- Light paths from the Schwarzschild solution
- The event horizon, photon sphere and shadow to scale
- A parallel beam or a point source of light
- Bending angle and closest approach for any ray
- A clock near the hole against a distant clock