Category:Refractive

Re*fract"ive (r*frkt"v), a. Etym: [cf. F. réfractif. See refract.]

Defn: serving or having power to refract, or turn from a direct Course; pertaining to refraction; as, refractive surfaces; refractive Powers. Refractive index. (opt.) See index of refraction, under Index. -- absolute refractive index (opt.), the index of refraction of a Substances when the ray passes into it from a vacuum. -- relative refractive index (of two media) (opt.), the ratio of the Sine of the angle of incidence to the sine of the angle of refraction For a ray passing out of one of the media into the other.