Word: reflector
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...thermoelectric sextant, using infra-red rays, invented by Paul Humphrey Macneil. The infra-red rays are in the long-wave end of the electromagnetic spectrum. They are really heat waves, capable of penetrating clouds. The Macneil Sextant has a curved reflector that collects and potently focuses infra-red rays on a thermocouple, two pieces of metal which when heated even one-millionth of 1° give off a tiny flow of electricity. This flow is enormously amplified, measured by a galvanometer. When the curved reflector is pointed directly at the sun, the flow of electricity is greatest and the navigator...
...000º C. on the sun's sizzling surface. Last week Chemist Robert Browning Sosman of U. S. Steel Corp., announced that by extending the principle of the magnifying glass he was able to capture half of the sun's 6,000º heat. With a big specially-built heliostat (reflector) he reflected sunlight on a focusing mirror; the mirror concentrated the rays, focused them on a piece of zirconium oxide, which melts at 1960º C. The zirconium oxide was liquefied. Chemist Sosman estimated he had produced a temperature of 3,000º...
...received on Saturday a reflecting mirror of 60 inches diameter for use in the telescope now being built for us. We will use this reflector, which was sent by Harlan T. Stetson, of the Ohio Methodist University, and which is worth about $60,000, until the new one is ready for installation, which will not be till 1933. The telescope when complete will be the most powerful in the East...
...construction on Oak Ridge will include the building and turret for the 60-inch reflector, three buildings for the other telescopes, a central building containing dark room, clock room, working library, storage, and quarters for one or two observers. Two or three separate cottages will be constructed for those members of the staff who will remain permanently on the site...
...importance of the Oak Ridge site as a location for a big reflecting telescope. Their quick and generous offer to Harvard of their valuable tract has been a great satisfaction to all the members of the Observatory staff who are concerned with the operation of the new reflector...