Word: reflectorized
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Dates: during 1960-1969
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...reflector of the world's biggest radio telescope is nothing more than a dish of chicken wire lining a 1,000-ft.-wide hole in the ground. Above it, three tall thin towers poke toward the sky. From the towers' tips, cables string out to suspend a tangle of girders over the center of the bowl. The complete contraption looks like the product of some errant giant playing with an outsize Erector set. But at its dedication in the hills south of Arecibo, Puerto Rico, last week, the great scope was tuned and ready-a sharp and farseeing...
...cardboard (which serves as a primitive camera) and observing the moon's progress on another sheet of white card a few feet away. The Illinois Society for the Prevention of Blindness recommends a sunscope built from a large cardboard box with a pinhole at one end, a paper reflector inside the opposite end, and a hole in the side big enough for the viewer to stick his head through. (He has to be careful not to block the rays from the pinhole.) To those who find this too cumbersome, the experts suggest the safest plan of all: stay indoors...
Among other business that the Council transacted yesterday was a request that the City Manager confer with Police Chief Daniel J. Brennan about the possibility of enacting legislation that would require the front of all bicycles to be equipped with a reflector...
...pyrometer, which has already performed well on the 61-inch reflector telescope at Harvard's Agassiz Station, measures the temperature of a small area of the moon's surface at a time. On a map of the moon some five feet in diameter, this area is about the size of a postage stamp. As the pyrometer scans the moon from side to side and from top to bottom, the record of intensity maps the distribution of temperature over the whole disc of the moon...
...Laboratory from Mount Wachusett. The tiny gallium arsenide diode, only 0.01 in. in diameter, was placed precisely at the focus of a 5-in. reflecting telescope that concentrated its infra-red light into a tight bundle. On the roof of the lab, the researchers set up their receiver-the reflector of a 5-ft. war-surplus searchlight with a sensitive photocell at its focal point...