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Gunn effect

[guhn]
noun Physics, Electronics.
  1. the onset of microwave oscillations in a thin slice of a semiconductor when a voltage exceeding a given value is applied across the slice.
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Origin of Gunn effect

named after J. B. Gunn (born 1928), British physicist, who discovered the effect in 1963
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for gunn effect

Gunn effect

noun
  1. a phenomenon observed in some semiconductors in which a steady electric field of magnitude greater than a threshold value generates electrical oscillations with microwave frequencies
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Word Origin

C20: named after John Battiscombe Gunn (1928–2008), British physicist
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