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De - Pt| English Dictionary: 'Refractive | by the DICT Development Group |
| 1 result for 'Refractive | |
| From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
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Refractive \Re*fract"ive\ (r?*fr?kt"?v), a. [Cf. F. r[82]fractif. 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. | |
