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 (frā-nĕl′), Augustin Jean 1788-1827.
French physicist who supported the wave theory of light, investigated polarized light, and developed a compound lens for use in lighthouses.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


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


(ˈfreɪnɛl; French frɛnɛl)
(Units) a unit of frequency equivalent to 1012 hertz
[C20: named after Augustin Jean Fresnel (1788–1827), French physicist]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(frəˈnɛl, freɪ-)

a unit of frequency equal to 1012 cycles per second.
[1935–40; after Augustin Jean Fresnel (1788–1827), French physicist]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.Fresnel - French physicist who invented polarized light and invented the Fresnel lens (1788-1827)
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References in periodicals archive ?
Holography News[R] readers may recall that Fresnel lenses were originally developed by French physicist Augustin-Jean Fresnel (1788-1827) for use in lighthouses to focus a small wattage bulb and project light over great distances, without the need for extremely thick and impractical solid glass lenses.
More sophisticated techniques borrowed from Fresnel lenses can be proposed to enhance the performance of the zoned fishnet metalenses such as application of a positive reference phase to reduce side lobes [41, 42].
We suggest an innovative type of sensor construction based on Fresnel lenses and capable of taking simultaneous recordings of both types of light of the wingbeat of an insect in flight.
SilcoSet model outfitted for high-precision LSR (Fresnel lenses with micro-fine surface structure).
The custom Fresnel lenses emit an even collimated light source that can be focused and controlled for maximum flexibility.
The Fresnel lens array in this prototype consists of five linear Fresnel lenses. The appearance of a single linear Fresnel lens is shown in the right bottom of Fig.
Product Design & Development spoke to Dan Spinella of Artworks-Florida, who helped recreate the intricate Fresnel lenses, about putting together this piece of history.
The examined solar trough uses a parabolic trough concentrator (PTC) and a series of cylindrical Fresnel lenses that concentrate solar radiation in two orthogonal directions.
High-concentrating photovoltaic (HCPV) systems [1113] use concentrating optics, such as dish reflectors or Fresnel lenses to focus sunlight with a concentration ratio ranging from 300 to over 1,000 suns and typically employ multifunction solar cells, which have a high efficiency and lower efficiency loss associated with increases in temperature or life degradation as compared to conventional Si solar cells.