Word: prism
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Dates: during 1950-1959
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...holding a prism to his eye, he would first shatter the space, then load its fragments with color and re-order them into a design. "A boat moving in the atmosphere," says he, "sets up stresses and movements in the air. That is what I visualize, and the pattern and organization of those stresses...
...first phase of a five-year project to determine the structure of the Milky Way, Bok has been supervising observations at Harvard's Boyden station in Bloemfontein, Orange Free State. Operations included the installation last month of the world's largest objective prism for photographing stellar spectra...
...inch Palomar telescope was built primarily for studying more distant nebulae. It can photograph them as faint blurs at distances something like one billion lightyears, but getting their spectra is more difficult. The light from the nebula is concentrated by the telescope's great mirror upon a prism, which spreads it into a spectrum one-tenth of an inch long. So dim is the image on the photographic plate that four to six hours of exposure are needed to make the picture...
...background was painted. By reversing the disc, the pail seemed to fall up or down; by stopping both disc and drum, the pail seemed to stop in midair. Garroway's "girl multiplier" is still on the top secret list, involves a translucent brick and operates on the prism principle...
...result of all these tightly synchronized movements is a picture 18 in. wide and 10 ft. long, of a strip of ground extending from horizon to horizon across the airplane's line of flight. When the airplane has moved far enough forward, the prism turns again and the camera takes another picture that partially overlaps the first. The process can be kept up as long as the film holds out, covering a continuous strip of territory 100 miles wide from an altitude...