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Перевод: refractive

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Тезаурус:

1. Severe refractive errors can give rise to visual defects of this sort.
2. He took a sheet of Gordon's notepaper and typed a short note to Alan Bleath, thanking him for his recent contribution to the stimulating seminar on lenses of a high refractive index, signed this with a fair approximation of Gordon's hand and put it in one of the "Gordon Beamish: See?" envelopes, addressed to Alan Bleath, 329 Carradine Road, Mitcham.
3. For example, refractive errors (those defects in the shape of the eye that prevent light rays from being brought sharply on to the retina in a single focus and which include short-sightedness, long-sightedness and astigmatism can often be at least partially corrected by the provision of appropriate lenses in eyeglasses.
4. Features include: multi-coated optical lenses and high refractive prisms, with a focus range of 6m to infinity; centre-wheel focusing and eyesight correction; adjustable inter-eye distance; roll-back eye cups for spectacle wearers; lanyard and case with belt loop.
5. Refractive errors
6. For those readers who are optically minded, you might also like to ponder over the design difficulties associated with a lens system which comes into direct contact with water, where the refractive indices of the organic water-based lens and the surrounding watery medium itself are very similar.
7. Lead oxide (PbO) increases the optical refractive index, bending light more as it enters the glass; "flint" glass for optical elements and "crystal" glass for tableware take advantage of this.
8. Also, organic eyes are not subject to the same design constraints as are cameras: fish eyes have lenses made of material whose refractive index varies continuously from the centre to the outside.
9. The chief problem with thallium was that it didn't seem to be used for anything much apart from the manufacture of optical lenses of a high refractive index - camera lenses, for example.
10. However, hydrogels do have some disadvantages including their low mechanical strength (which may cause problems during manipulation for implantation) and their relatively low refractive index, which may mean using thicker lenses to achieve a given optical power.
11. "Work on optical lenses," said Henry, adding, smartly, "with a high refractive index!"
12. The UV-975 variable wavelength detector has a tapered flow cell giving reduced refractive index effects.
13. Does any drink look more quenching than one of those Italian or French patent aperitifs, swirling in a refractive pink or russet oiliness, clothing the melting ice: a Campari, Dubonnet, Lillet or (too rare in this country) a Picon?