Author: v3l0c1r

cybermax:

zerostatereflex:

The physics of air.

How can we see this?

“Demonstration of an optical technique that allows us to see small changes in the index of refraction in air. A point source of light is reflected from a concave mirror and focused onto the edge of a razor blade, which is mounted in front of the camera. Light refracted near the mirror and intercepted by the blade gives the illusion of a shadow.”

This is cool.