Egg -
3 min video
camera, monitor, mirror, video camera
The video was created using three mirrors.
A mirror, by definition, reflects the light coming from an object and redirects that light to the human eye, giving the impression of an image. So when two mirrors face each other they reflect that light infinitely. If a third mirror is added, it reflects again that infinite relationship.
In optical feedback (using a camera/monitor relationship), the original light source can be extinguished once the feedback has started and in the absence of friction or other interference, the light will continue to travel infinitely.
