| refracted light | Bent rays of light changed in passage from one transparent medium to another of unequal density. See: refraction. (05 Mar 2000) |
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| refractile | <cell biology> Adjective usually used in describing granules within cells that scatter (refract) light. Not to be confused with refractory. (18 Nov 1997) |
| refracting | Serving or tending to refract; as, a refracting medium. <optics> Refracting angle of a prism See Telescope. Source: Websters Dictionary (01 Mar 1998) |
| refracting angle of a prism | The angle between two plane surfaces of a prism. Synonym: refracting angle of a prism. (05 Mar 2000) |
| refraction | <physics> Bending of waves as they pass from a medium having one refractive index to a medium (or region within a medium) having a different refractive index. (09 Oct 1997) |
| refraction, angle of | <microscopy> The acute angle between the normal to a refracting surface at the point of incidence, and the refracted ray. (05 Aug 1998) |
| refraction, ocular | Refraction of light effected by the media of the eye. It also includes the determination of the refractive state and refractive correction. (12 Dec 1998) |
| refractionist | A person trained to measure the refraction of the eye and to determine the proper corrective lenses. (05 Mar 2000) |
| refractionometer | <optics> A contrivance for exhibiting and measuring the refraction of light. Origin: Refraction. Source: Websters Dictionary (01 Mar 1998) |
| refractive | Serving or having power to refract, or turn from a direct course; pertaining to refraction; as, refractive surfaces; refractive powers. Refractive index. <medicine> 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. Origin: Cf. F. Refractif. See Refract. Source: Websters Dictionary (01 Mar 1998) |
| refractive accommodative esotropia | That type of esotropia eliminated by correction of hypermetropic refractive error. (05 Mar 2000) |
| refractive amblyopia | A suppression of central vision due to an unequal refractive error (anisometropia) of at least two diopters. This induces a sufficient difference in image size (aniseikonia) that the two images cannot be fused. In order to avoid confusion, the blurrier image is suppressed. Synonym: refractive amblyopia. (05 Mar 2000) |
| refractive errors | Deviations from the average or standard indices of refraction of the eye through its dioptric or refractive apparatus. (12 Dec 1998) |
| refractive index | <microscopy> The ratio of the velocity of light in a vacuum to the velocity in some medium. Refractive index generally increases with the atomic number of the constituent atoms. (05 Aug 1998) |
| refractive keratoplasty | Any procedure in which the shape of the cornea is modified, with the intent of changing the refractive error of the eye; for example, if the cornea is flattened, the eye becomes less myopic. See: photorefractive keratectomy, keratophakia, lamellar keratoplasty, thermokeratoplasty, keratomileusis, radial keratotomy. Synonym: keratorefractive surgery. (05 Mar 2000) |
| refracting media |
the transparent tissues and fluids in the eye through which light rays pass and by which they are refracted and brought to a focus on the retina; the structures include the cornea, aqueous humor, crystalline lens, and vitreous body. Called also dioptric media.
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| refractor |
(re
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| refractory flask |
a metal tube in which a refractory mold is made for casting metal dental restorations or appliances; called also casting f.
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| refrangibility |
(re
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| refractor |
A refracting or refractor telescope is a type of optical telescope which refracts light at each end using lenses. This refraction causes parallel light rays to converge at a focal point; while those which were not parallel converge upon a focal plane. This can enable a user to view a distant object as if it were brighter, clearer, and/or larger. These are similar to microscopes. The monocular is a type of refractor. A typical refractor has two lenses, an objective lens and an eyepiece lens. ...
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| REF | an industrial plant for purifying a crude substance |
|---|---|
| REF | the process of removing impurities (as from oil or metals or sugar etc.) |
| REF | an industry that produces and delivers oil and oil products |
| REF | give a new surface |
| REF | a skilled worker who is employed to restore or refinish buildings or antique furniture |
| REF | outfitting a ship again (by repairing or replacing parts) |
| REF | fit out again |
| REF | become inflated again |
| REF | inflate again, as of a balloon |
| REF | economics: raise demand, expand the money supply, or raise prices, after a period of deflation |
| REF | economics: experience reflation |
| REF | inflation of currency after a period of deflation |