Word: signal
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Dates: during 1940-1949
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This declaration seemed to signal a truce in the bitter left-ring rumpus for the time being and enables the CIO to offer a solid front against industry in the wage battles of this winter...
Coach Dick Harlow's charges, when they weren't working on protecting their kickers, devoted a large portion of their time to signal practice, which saw the head mentor make frequent changes in all three Varsity elevens...
...team yesterday, but he saw fit to use only three of his first-stringers in the contact drill against the Junior Varsity. Only Vince Moravee, Ned Dewey and John Florentine of the first eleven took part in the action, while the other probable starting team ran through a signal drill...
Infra-red rays, which every photographer knows pierce fog, are the basis of one system, now being tested. Each signal box would have an infra-red generator; when its danger signal was up, a box would pour a constant beam of rays down the track. An approaching train would pick up the bad news on a photoelectric cell in the driver...
...other gadget: sonar, radar's supersonic cousin. A sonar-equipped locomotive, by means of an oscillator and amplifier, would keep sending out whistle blasts pitched so high that nobody could hear them; but if a signal box ahead had its danger arm up, a reflector would send back the sound waves to the locomotive. There a microphone would detect the supersonic racket, a bell would ring (or a light flash), and the engineer would throttle down to his foggy-foggy...