The Sellmeier equation is an empirical relationship between refractive index and wavelength for a particular transparent medium. The equation is used to determine the dispersion of light in the medium.
It was first proposed in 1871 by Wilhelm Sellmeier, and was a development of the work of Augustin Cauchy on Cauchy's equation for modelling dispersion.
Read more about Sellmeier Equation: The Equation, Coefficients
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