Word: waves
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Dates: during 1930-1939
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...heard in Western Europe on Black Sunday, but soon after midnight, The Netherlands listened to wave after wave of thrumming, high-flying airplanes speeding southeast-by-east along the coast. (The neutral Netherlands next day duly "protested.") Monday brought word that some of these planes had "bombarded" Germany with 6,000,000 leaflets in German, telling A. Hitler's people...
...around the dials of radios which might hear propaganda and news from the other side. Hedging Italy's borders, for example, are reported about 100 small, telegraphic transmitters, some of which have lately been suspected of sending off streams of dashes to hedge off U. S. short-wave radio transmissions to Italy. Each such transmitter, radio engineers know, could be operated to transmit a "sawtooth" signal which could affect all broadcasting on a band 300 kilocycles wide (as much air space as 30 U. S. stations occupy...
...year. In the last year almost 3,000,000 new radios were sold, but fewer than 1,000,000 were the Reich-backed People's Radios, geared to local reception. Of the rest, despite Nazi frowning on broadcasts from abroad, 1,500,000 were all-wave sets designed to receive foreign short-wave broadcasting, bringing the number of all-wave receivers in Germany...
...wharf friends and kin of the Itacare's passengers braved the ugly weather to greet them. They watched the steamer strain closer, her prow dishing up small seas at every step. Suddenly a huge wave whammed her, sideslipped her into a deep sea-trough. Next instant she dived prow-first. Down she sank, spewing out 36 of her passengers & crew, drowning the rest. It was one of the worst sea disasters of recent years...
...keep out light. The two upper shelves in the black football each contain two Geiger counters, or ionization tubes which detect the arrival of cosmic ray particles. On the shelves below the counters are eight radio tubes. Connected to the counters and tubes is a light, compact short-wave radio transmitter with an aerial. When the apparatus is attached to a balloon and sent aloft, passage of the cosmic rays through the Geiger counters will be transmitted to the men on the ground through their short-wave receiving set, will be recorded on a slender tape. Disappearance of the apparatus...