Hartmann dispersion formula

Hartmann dispersion formula

[′härt·män di′sper·zhən ‚fȯr·myə·lə] (optics) A semiempirical formula relating the index of refraction n and wavelengths λ; n = n0+ a /(λ - λ0), where n0, a, and λ0 are empirical constants. Also known as Cornu-Hartmann formula.