Box PS19; Folder: Bombs, Atomic.
Copy affixed to photo back: "C1177002...Watchyour credit, International News Photos. SLUG(LAMPSHADE), 'RADIATION LAMPSHADE', Syracuse, N.Y........Although it resembles an ordinary lampshade, this one has been developed with the aid of General Electric engineers for the grim task of determining the position of an atomic bomb blast. A number of the shades would be mounted around a possible target area. In the event of an atomic explosion, heat radiation would scorch the paint on the inside of the shade. The brass rod, shown in center, would block radiation, however, and cause a shadow or image of itself on the scorched region. By means of the numbered and lettered grid lines, the shadow would automatically plot information from which could be computed quickly the height of the blast and 'ground zero', the point directly beneath the blast. It would be of great value to civil defense authorities. W.9.17.51."
"Bombs. Atomic."
