Fresnel

A type of spot light with a Fresnel lens, which due to a set of concentric circular ribbing on its surface, gives an even field of light with soft edges.

Fresnel

[frequency] A Fresnel is a unit of frequency equal to 1012 s−1. It was occasionally used in the field of spectroscopy, but its use has been superseded by terahertz (with the identical value 1012 hertz). ...
Found on http://en.wikipedia.org/wiki/Fresnel_(frequency)

Fresnel

A kind of spotlight (qv) in which the light is concentrated by a fresnel lens (a lens with concentric ridged rings). Projects a variable angle soft-edged beam. Sometimes called a fr
Found on http://www.britishtheatreguide.info/otherresources/glossary/glosswz.htm

Fresnel

A kind of spotlight (qv) in which the light is concentrated by a fresnel lens (a lens with concentric ridged rings). Projects a variable angle soft-edged beam. Sometimes called a frênel and given the French pronunciation.
Found on http://www.encyclo.co.uk/local/21207

Fresnel

A stepped convex lens. It is most commonly used to descripe tungsten-incandescent lamps. (Lighting)
Found on http://www.filmland.com/glossary/Dictionary.html#A

Fresnel

A type of lantern that emits a soft edged diffused light.
Found on https://www.encyclo.co.uk/local/20411

Fresnel

Pattern of a special form of condenser lens consisting of a series of concentric stepped rings, each ring a section of a convex surface which would, if continued, form a much thicker lens. Used on focusing screens to distribute image brightness evenly over the screen
Found on http://www.encyclo.co.uk/local/21048

Fresnel

Pattern of a special form of condenser lens consisting of a series of concentric stepped rings, each ring a section of a convex surface which would, if continued, form a much thicker lens. Used on focusing screens to distribute image brightness evenly over the screen.
Found on http://www.rodsmith.org.uk/photographic%20glossary/rods%20photographic%20gl

Fresnel

The Fresnel was a French Redoutable Class submarine of 1379 tons displacement launched in 1929. She was powered by diesel engines providing a top speed of 19 knots surfaced and electric motors providing a top speed of 10 knots submerged. She carried a complement of 67 and was armed with one 3.9 inch anti-aircraft gun; two machine guns and eleven 21...
Found on http://www.probertencyclopaedia.com/browse/RF.HTM

Fresnel

Type: Term Pronunciation: fres-nel′ Definitions: 1. Augustin Jean, French physicist, 1788-1827. See: Fresnel lens, Fresnel prism
Found on http://www.medilexicon.com/medicaldictionary.php?t=35548

fresnel

unit of optical frequency equal to one terahertz
Found on http://phrontistery.info/f.html

Fresnel

[n] - French physicist who invented polarized light and invented the Fresnel lens (1788-1827)
Found on http://www.webdictionary.co.uk/definition.php?query=Fresnel
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