OPN Image Galleries

Image of the Week

After Image

Photo Contests

Submit an image to OPN.
Optics and Photonics Image of the Week RSSRSS
Filter array

Filter array

A red, blue and green filter array at the focal point of a field mirror shows density gradients caused by rising columns of warmed air. The columns displayed as specific colors as they bent light rays towards the red or green filter. Undeviated light passed through central blue strip. –Andrew Davidhazy

> Download hi-res image