Fresnel (unit)
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Script error: No such module "Unsubst". A fresnel is a unit of frequency equal to one trillion cycles per second (i.e., 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 It was occasionally used in the field of spectroscopy, but its use has been superseded by terahertz (with the identical value 1012 hertz).[1] It is named for Augustin-Jean Fresnel the physicist whose expertise in optics led to the creation of Fresnel lenses.[2]
References
- ↑ Bayliss, Noel S. "The permicron: a unit of wavenumber", Nature, vol. 167, p. 367, 3 March 1951.
- ↑ Scientific Unit Conversion: A Practical Guide to Metrication Cardarelli, F. 1999. Springer Science & Business Media. Template:ISBN
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