Fresnel (unit of frequency)
From Infogalactic: the planetary knowledge core
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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 It was occasionally used in the field of spectroscopy, but its use has been superseded by terahertz (with the identical value 1012 hertz).[1]
References
- ↑ Bayliss, Noel S. "The permicron: a unit of wavenumber", Nature, vol. 167, p. 367, 3 March 1951.
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