Original caption Frozen by a camera in few millionths of a second the fiery ball from a nuclear device disintegrates a steel tower shortly after detonation at the Atomic Energy Commissions Nevada Proving Ground Equipped with an electronic shutter the superspeed camera used was developed by a Boston optical firm Edgerton Germeshasen and Grier Inc The company said a number of other photographs were taken by a bank of Rapatronic cameras freezing the explosion at various stages The photographs taken during tests earlier this year when analyzed by scientific personnel provide information of vital interest in the development and design of atomic weapons the company said