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electrostatic lens

noun
1.
an electron lens that focuses an electron beam by passing it through a series of electrodes kept at different voltages.
Origin
1950-1955
1950-55
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for electro-static lens

electrostatic lens

noun
1.
an electron lens consisting of a system of metal electrodes, the electrostatic field of which focuses the charged particles
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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