Gravitational Lens

Bend light. Change perspective.

Move a gravitational lens across the cosmos or your own image and watch the background warp.

FR / LAB

Preparing the experiment…

Preparing controls.

01 / THE GESTURE

How to explore

Drag the lens or use X and Y controls. Change strength, enable the grid and try a local JPEG or PNG photo.

02 / THE MODEL

What you are observing

Mapping based on the thin-lens equation for a point mass. The dark horizon is illustrative, not full relativistic ray tracing. Photos stay on your device and are not included in shared links. Requires WebGL 2.