Word: projector
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Dates: during 1960-1969
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...playground; and the Seesaw Pony, which not only teeters but simultaneously flips a center section up and down. There is an Apollo series, double beds with built-in hi-fi and lighting system designed to create a "mesmerizing bedroom mood," and the Fantasia series, which throws in a movie projector and screen as well...
SelectaVision (SV) is designed to convert any standard TV set into a home movie projector and screen. When perfected, the SV converter will be able to play movies, operas, lessons-or even deliver an audio-visual TV magazine. RCA hopes to begin marketing the first SV adapters in 1972 for a retail price of "under $400." Six-inch cartridges, providing a half-hour of color programming, would initially cost about $10 apiece but could be rented for far less...
...pressing the button, the University of Miami scientist had set off a low-frequency sound projector submerged in 60 ft. of water on the ocean floor. To any carnivorous fish within earshot, the signals probably seemed similar to the noises made by other fish when they are feeding, being attacked or under other conditions of stress. Excited by the apparent proximity of prey, the sharks and other predators greedily converged on the sound projector...
...says Myrberg, "I was sitting there hitting the 'chirp' button, but visibility was so bad that I couldn't follow the little damselfish." Frustrated, he told his sound man to try a different set of signals. No sooner did the sound projector begin broadcasting a low-frequency tone than "bang, the whole area was filled with sharks." A chance turn of the dials had paid off with completely unexpected information...
...Scientists now foresee exciting possibilities in the control of fish by sonic commands. They might, for example, be used to lure dangerous fish away from swimming areas or from divers in the sea. There are even potential military applications. By broadcasting intermittently at a popular shark frequency, a sound projector could provide a moored ship with an effective finny barrier against enemy frogmen...