| 释义 |
ˈwiggler
[f. wiggle v. + -er1.]
1. Something that ‘wiggles’; applied esp. to the larva of a mosquito.
1859J. R. Bartlett Dict. Americanisms (ed. 2) 492 Waggletail, the larva of the mosquito, etc.; also called a wiggler. 1895Outing (U.S.) XXVI. 375/2 We..took..a box of worms,..for without one squirming wiggler the Madame would not have secured her bass. 1938J. Steinbeck Long Valley 186 The mosquito wigglers tumbling up and down, end over end, in the water. 1969K. M. Wells Owl Pen Reader iv. 365 In a month or two this bog hole will be full of wigglers.
2. Physics. A magnet designed to make a beam of particles in an accelerator describe a sinusoidal path in order to increase the amount of radiation they produce. Freq. attrib.
1974IEEE Trans. Nucl. Sci. XX. 984/1 This proposal projects the installation of many additional beam runs and ‘wiggler’ magnets. 1981Science 16 Oct. 316/2 A wiggler is a special magnet that fits into one of the straight sections of a storage ring between the bending magnets. The wiggler bends the electrons into a sine wave-shaped path whose local radius of curvature is smaller than that of the smooth circular arc of the bending magnets. |