Lorentz–Lorenz equation

Math Formula Information

Formula: ${\displaystyle {\frac {n^{2}-1}{n^{2}+2}}={\frac {4\pi }{3}}N\alpha }$

Name: Lorentz–Lorenz equation

Description: equation relating the refractive index of a substance to its polarizability

Elements of the Formula

refractive index	${\displaystyle n}$	ratio of the speed of light in vacuum to that in the medium
polarizability	${\displaystyle \alpha }$	tendency of matter subjected to an electric field to acquire an electric dipole moment
volumetric number density	${\displaystyle N}$	count per volume
pi	${\displaystyle \pi }$	constant ratio of the circumference of a circle to its diameter

Data Source

https://www.wikidata.org/wiki/Special:EntityPage/Q915684