Word: signalization
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Dates: during 1960-1969
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...minutes and 50 seconds away from time of loss of signal," Commentator John McLeaish reported, as Apollo began to curve around the back side of the moon, where its radio communication with earth would be blocked. "Here in mission control we're standing by with certainly a great deal of anxiety at this moment...
...There are two major jamming techniques used by the U.S.S.R. One, called ground-wave jamming, employs a local transmitter that blocks a selected frequency with either a garbling distortion signal or by overriding another program with a Soviet program. This technique, however, works well only within a three-mile radius of the transmitter. Sky-wave jamming, the second technique, calls for transmission from a point as far away as the source of the outside signal. This requires expensive tower construction in remote areas and constant monitoring of the ionosphere, off which radio waves are bounced from sender to receiver...
...name is the code message used by Japanese pilots over Pearl Harbor to signal their mission's success...
...Fatah's signal, a band of Arabs sets out across the Jordan River on rafts made from tractor tires, carrying their Russian-made Kalashnikov assault rifles in waterproof inner tubes. In the darkness they land, make their way inland, plant a mine, ambush an Israeli patrol or throw a grenade, then scramble as best they can for home. The odds are heavily against their making it back, for many are caught or killed by efficient Israeli security forces. But the rewards are high, as posthumous compensations go. They are martyrs to all Arabs, their photographs and tales of their...
Gall-bladder disease is becoming more common as the proportion of oldsters in the population increases. The usual form is cholecystitis (inflammation of the gall bladder), resulting from the formation of stones in the gall bladder. Sometimes, the stones immediately signal their presence by causing sharp pain. In such cases, surgery is performed promptly. But many gallstones lie dormant for years-and it is this "silent" type that sent the Mayo Clinic's Dr. Martin A. Adson into debate with fellow surgeons...