a. j. fresnel

Fresnel

[fruh-nel; French frey-nel]
noun
Augustin Jean, 1788–1827, French physicist.
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World English Dictionary
fresnel (ˈfreɪnɛl, French frɛnɛl)
 
n
a unit of frequency equivalent to 1012 hertz
 
[C20: named after Augustin Jean Fresnel (1788--1827), French physicist]

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

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American Heritage
Science Dictionary
Fresnel   (frā-něl')  Pronunciation Key 
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.
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