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fresnel

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Fresnel
Augustin Jean . 1788--1827, French physicist: worked on the interference of light, contributing to the wave theory of light
fresnel [frā′nel]
(physics)
A unit of frequency, equal to 1012hertz.
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Sebastien Guenneau, from the University's Department of Mathematics, who developed the technology with Stefan Enoch and Mohamed Farhat from the Fresnel Institute (CNRS) in Marseilles, France, explained: "We are able to 'tune' the cloak to the differing frequencies of incoming waves which means we can divert waves of a variety of frequencies.
Scientists making 'invisibility cloak' that protect against ... by International Business Times - US ed.
For three months, the light has been off at the historic structure, as contractors with the Oregon Parks and Recreation Department made repairs to the lantern rotated by eight brass carriage wheels that support its first-order Fresnel lens.
Heceta Head Lighthouse once again a shining example by The Register-Guard (Eugene, OR)
24 cm diameter acrylic Fresnel lenses to determine the effect of lunar dust simulant on concentration performance.
A solar Stirling renewable energy power system for earth and space ... by Journal of the Alabama Academy of Science
 
 
 
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