Word: infra
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...white limestone building at No. 1901 Constitution Avenue, in Washington, stands a semicylindrical mirror. Guards sitting at ease inside the door can stare at its coldly gleaming curve and watch the whole face of the building without leaving cover. Along the building's window ledges run beams of infra-red light, each hitched to an alarm system. The windows themselves are intricately wired, and hidden wires thread through walls and partitions. No visitor is admitted to this stronghold except for a very good reason, and once a visitor is inside, he is watched and escorted continuously, even when...
...School of Aviation Medicine, scientists were busy perfecting an accurate little gadget that will warn the high-altitude flyer when the oxygen in his bloodstream is dropping toward the danger point. Clamped on the translucent cartilage of a pilot's ear, a tiny light bulb emitting red and infra-red rays will shine through the ear lobe to illuminate a small photoelectric cell. As the oxygen saturation of the pilot's blood drops below its normal 98%, it will turn a darker, heavier red. Less light will filter through his ear lobe and less current will be given...
...founded in 1939 by Richard S. Perkin, a bored Wall Street man whose hobby was amateur astronomy. Teaming up with another amateur astronomer, Charles W. Elmer, he was soon turning out such optical oddities as prisms of poisonous thallium iodide (for infrared work), as well as flame photometers and infra-red spectrometers...
...contrastingly tiny-only 12 by 14 ft.-and so was the 8 by 19 ft. kitchen, but with their built-in furniture they had the neat efficiency of cruiser cabins and galley. There was nothing to sweep under, and no space to mislay things. The two bathrooms had overhead infra-red lamps to take the chill off. Neutra, with his characteristic attention to detail, had taken down a hanging from his own house to show Mrs. B. how the living-room draperies should be made...
...picture windows and a cozy fireplace, the house has a small bedroom separated by a draw curtain from the living room. The living room can also be converted into a second bedroom. The house is heated by a system of glass-radiant heaters that plug into sockets, throw off infra-red rays which warm the body...