Light Painting

Light Painting

. This picture was made by using crystals to liberate the spectral colors in visible sunlight, refracting them directly onto a photographic plate. It was obtained in the rarefied atmosphere atop Hawaii’s Mauna Kea volcano, where many of the world’s best optical telescopes are located. (Courtesy of Eric J. Pittman, Victoria, British Colombia.)

Copyright 2010, Professor Kenneth R. Lang, Tufts University