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fresnel

[ fruh-nel, French frey-nel ]
/ frəˈnɛl, French freɪˈnɛl /
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noun
a unit of frequency, equal to 1012 cycles per second.
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Origin of fresnel

First recorded in 1935–40; named after Augustin Jean Fresnel

Other definitions for fresnel (2 of 2)

Fresnel
[ fruh-nel; French frey-nel ]
/ frəˈnɛl; French freɪˈnɛl /

noun
Augustin Jean, 1788–1827, French physicist.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use fresnel in a sentence

British Dictionary definitions for fresnel (1 of 2)

fresnel
/ (ˈfreɪnɛl, French frɛnɛl) /

noun
a unit of frequency equivalent to 10 12 hertz

Word Origin for fresnel

C20: named after Augustin Jean Fresnel (1788–1827), French physicist

British Dictionary definitions for fresnel (2 of 2)

Fresnel
/ (French frɛnɛl) /

noun
Augustin Jean (oɡystɛ̃ ʒɑ̃). 1788–1827, French physicist: worked on the interference of light, contributing to the wave theory of light
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

Scientific definitions for fresnel

Fresnel
[ frā-nĕl ]
Augustin Jean 1788-1827

French physicist whose investigations of the interference, diffraction, and polarization of light helped establish the theory that light moves in a wavelike motion. Fresnel also made great contributions to the field of optics, including the development of a compound lens for use in lighthouses.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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