Word: scopes
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Dates: during 1940-1949
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Loran shore stations always work in pairs: the "master" and the "slave" (see diagram). Both operate on the same frequency and both broadcast the same radio "pulse signals"-short bursts of radio energy transmitted at regular intervals. The pulse from the master station appears as a "pip" on the "scope" of the plane's loran receiver. It also sets off a second pulse from the slave station, which is received as a second pip. The pulses arrive at slightly different times, since they have traveled different distances...
...part of the far-flung preparations. In Washington, mild-mannered L. A. Sawyer, technical director of Operation Crossroads, battled with a crushing schedule of planning and consultation. Many of his projects were still secret, and would remain so, but enough had been released about them to show the gigantic scope of the operation...
From the mists of Washington indecision, the shape and scope of a defense mechanism to serve the nation began to emerge. The shape was still blurred at the edges, but the size of the projected machine was unmistakable and staggering in its vastness. It would make the U.S. a nation under arms, with more men watching the ramparts than in the perilous days...
...national income is the economist's yardstick for measuring the prosperity of the nation, and as this represents an increase of $458 billion dollars over the 1944 income, Hansen's prophecy is enormous in its scope...
...feeble echo, the receiving apparatus had to be extra sensitive. Although the transmitter shot out 4,000 watts of power, echoing back from the moon came only 9/10,000,000,000,000,000 of a watt-that was strong enough to be received clearly. On the visual "scope" the echo showed as a wiggle in a luminous blue line, and could be heard as a brief hum. It came at the right time for a 450,000-mile round trip-about 2.4 seconds after the outgoing pulse...