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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. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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In the mid zone the modified theory is reduced to the Fresnel approximation, and here the latter may be used with confidence. The "first order" fresnel lens casts its beam 21 miles offshore, the brightest light on the Oregon coast. The Supermex consisted of a sensor monitor, which was mounted above the cage to detect changes in heat across multiple zones of the cage through an array of Fresnel lenses. |
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