Enlargement print of high speed photograph entitled 'Atomic Bomb explosion', by Harold Edgerton.

Photographed at the Nevada Proving Grounds by Edgerton and his colleagues at EG&G for the Atomic Energy Commission. Shows the first microseconds of an atomic explosion, the fireball was documented in a 1/100,000,000-of-a-second exposure, taken from seven miles away with a lens ten feet long. The intense heat vaporized the steel tower and turned the desert sand to glass. Taken before 1952 (from http://edgerton-digital-collections.org)