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magnetic lens

noun
1.
Physics. an electron lens using magnetic fields for focusing an electron beam.
Origin of magnetic lens
1915-1920
1915-20
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for magnetic lens
Historical Examples
  • Some of them pass through a thin metal window in the vacuum-tank wall and are focused by a magnetic lens into a beam.

    LRL Accelerators Lawrence Radiation Laboratory
British Dictionary definitions for magnetic lens

magnetic lens

noun
1.
a set of magnets, esp electromagnets, used to focus or defocus a beam of charged particles in an electron microscope, particle accelerator, or similar device
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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13
17
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