Photograph of technicians of the Lockheed Corporation's Missile Systems Division, ca.1950. Two men stand on either side of a large rounded device on wheels. Each man wears a pair of goggles and the man at left peers into an extension of the device, at right. In the background, what appears to be a wooden set of stands can be seen.; Photoprint reads: "Van Nuys, California. Lockheed Missile Systems Division technicians are shown operating co.is solar funace which is used to test head-resistance qualities of material used in missiles. The solar furnace, actually a converted 60" anti-aircraft searchlight, gathers the sun's rays and by focusing them on a small area can raise temperatures to 5500 degrees Farenheit in a few seconds. High speed ca...