- a unit of frequency, equal to 1012 cycles per second.
Origin of fresnel
- Augustin Jean,1788–1827, French physicist.
Examples from the Web for fresnel
Historical Examples of fresnel
Fresnel dipped a hand into his pocket, and fetched thence a key.Scaramouche
Fresnel, Oppert, and Thomas, were included in the same disaster.A History of Art in Chalda & Assyria, v. 1
The light-house has since been rebuilt, and shows a Fresnel light.Cape Cod
Henry D. Thoreau
Fresnel therefore adopted the ingenious device proposed by Condorcet, that of constructing a lens of a number of distinct pieces.
But for lenses the burner has seventeen films of flame, and is said to possess six times the power of the Fresnel lamp.
- a unit of frequency equivalent to 10 12 hertz
Word Origin for fresnel
- Augustin Jean (oɡystɛ̃ ʒɑ̃). 1788–1827, French physicist: worked on the interference of light, contributing to the wave theory of light
- 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.