Dodge, Mary Mapes, 1830-1905 · [New York : Scribner & Co.] · leaf 356
erman puff-liag. The biggest Zeppelin raid of the war wasrendered a failure, thanks to the listening ser-vice in London. Owing to the fact that Zeppe-lins are good targets in daylight, they had toi\y at night; and to keep straight in theircourse, they must have bearing corrections. These were being… … trigonometry it would know where it was, andcorrect its course easily. (See Figure 3.) The English knew that this .system was be-ing used, so when the big Zeppelin fleet camein sight of the coast, they started up powerfuljambing-machines. A jambing-machine is abig radio set whose waves are so…
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