A Fresnel is a unit of
References
Wikimedia Foundation. 2010.
Fresnel (disambiguation) — Fresnel can refer to physicist Augustin Jean Fresnel, or to the following topics associated with him:*Fresnel equations, describing light reflection and refraction *Huygens Fresnel principle, a description of wave propagation *Fresnel diffraction … Wikipedia
fresnel — /freuh nel /, Fr. /frdday nel /, n. a unit of frequency, equal to 1012 cycles per second. [1935 40; named after Augustin Jean Fresnel (1788 1827), French physicist] * * * … Universalium
fresnel — fres•nel [[t]frəˈnɛl, freɪ [/t]] n. phs a unit of frequency equal to 1012 cycles per second • Etymology: 1935–40; after Augustin Jean Fresnel (1788–1827), French physicist … From formal English to slang
fresnel — noun A unit of frequency equal to 10 or one terahertz … Wiktionary
fresnel — unit of optical frequency equal to one terahertz Units of Measurement … Phrontistery dictionary
Fresnel diffraction — In optics, the Fresnel diffraction equation for near field diffraction, is an approximation of Kirchhoff Fresnel diffraction that can be applied to the propagation of waves in the near field.[1] The near field can be specified by the Fresnel… … Wikipedia
fres|nel — «fray NEHL», noun. a unit of frequency equivalent to 1012 (one trillion) cycles per second. ╂[< Jean Augustin Fresnel, 1788 1827, a French physicist] … Useful english dictionary
light — light1 lightful, adj. lightfully, adv. /luyt/, n., adj., lighter, lightest, v., lighted or lit, lighting. n. 1. something that makes things visible or affords illumination: All colors depend on light. 2. Physics … Universalium
optics — /op tiks/, n. (used with a sing. v.) the branch of physical science that deals with the properties and phenomena of both visible and invisible light and with vision. [1605 15; < ML optica < Gk optiká, n. use of neut. pl. of OPTIKÓS; see OPTIC,… … Universalium
Solar thermal energy — Solar thermal system for water heating in Santorini, Greece … Wikipedia
