Barksdale Air Force Base, Louisiana — Laser-Guided Bomb Units, commonly referred to as LGB's, were dropped from the bomb bay of a B-52 Stratofortress for the first time in nearly a decade during ...
Photo: Atomic bomb test explosion in Alamagordo, New Mexico, July 16, 1945. AP/Wide World Photos In 1932, James Chadwick discovered the neutron, a small atomic particle with mass but no charge.