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 It was occasionally used in the field of spectroscopy, but its use has been superseded by terahertz (with the identical value 1012 hertz).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] It is named for Augustin-Jean Fresnel the physicist whose expertise in optics led to the creation of Fresnel lenses. [2]
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 It was occasionally used in the field of spectroscopy, but its use has been superseded by terahertz (with the identical value 1012 hertz).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] It is named for Augustin-Jean Fresnel the physicist whose expertise in optics led to the creation of Fresnel lenses. [2]