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Sweep |
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sweep
1. the distance, arc, etc., through which something, such as a pendulum, moves 2. Cards a. the winning of every trick in a hand of whist b. the taking, by pairing, of all exposed cards in cassino 3. short for sweepstake 4. Cricket a shot in which the ball is hit more or less square on the leg side from a half-kneeling position with the bat held nearly horizontal 5. a. a long oar used on an open boat b. Austral a person steering a surf boat with such an oar 6. any of the sails of a windmill 7. Electronics a steady horizontal or circular movement of an electron beam across or around the fluorescent screen of a cathode-ray tube sweep [swēp] (electronics) The steady movement of the electron beam across the screen of a cathode-ray tube, producing a steady bright line when no signal is present; the line is straight for a linear sweep and circular for a circular sweep. The steady change in the output frequency of a signal generator from one limit of its range to the other. (metallurgy) A profile pattern used to form molds for symmetrical articles made by sweep casting. (ordnance) Swift flight of a formation of combat airplanes over enemy territory. To cover a wide area with gunfire. sweep 1. Said of any large form or mass that curves; for example, the sweep of a curved wall. 2. A long pole, pivoted on a vertical post, to which a bucket is attached at one end; used to raise water from a well. Sweep a special device on minesweepers and helicopters that is used for the detection and destruction of mines (see). There are ship, motorboat, airplane, and coastal sweeps; sweeps adapted for river use are called river sweeps. Depending on their design and how they are used, sweeps are classified as single-ship, double-ship, surface, deep-water and bottom sweeps. Sweeps are subdivided into two categories, depending on whether they make contact with the mines. Contact sweeps are intended for the destruction of moored contact mines; they may tow or mark the mines or cut the mooring lines. Noncontact or influence sweeps are designed to destroy bottom mines. They generate a magnetic, electromagnetic, or hydrodynamic field when moved, thus simulating the motion of a ship and actuating the mine fuzes. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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