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Webster 1913 Edition
Refractive
Re-fract′ive
(r?-fr?kt′?v)
, Adj.
[Cf. F.
réfractif
. See Refract
.] 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.
Webster 1828 Edition
Refractive
REFRACT'IVE
,Adj.