| 释义 |
Dispersive power
| (Opt.) | the relative effect of a material in separating the different rays of light by refraction, as when the substance is formed into a prism. |
See also: Dispersive dispersive power
dispersive power[də′spər·siv ‚pau̇·ər] (optics) A measure of the power of a medium to separate different colors of light, equal to (n2- n1)/(n- 1), where n1 and n2 are the indices of refraction at two specified widely differing wavelengths, and n is the index of refraction for the average of these wavelengths, or for the D line of sodium. MedicalSeedispersionFinancialSeeDispersion |