refractorn.

Brit.

/rᵻˈfraktə/, U.S.

/rəˈfræktər/,

/riˈfræktər/

Origin: Formed within English, by derivation. Etymons: refract v., -or suffix.

Etymology: < refract v. + -or suffix. Compare refracter n.

†1. A thing which counters or repels another. Obsolete. rare.

ΘΚΠ

the mind > will > decision > obstinacy or stubbornness > [noun] > disobedient stubbornness > person

refractary1616

refractory1627

refractor1682

1682 N. Grew Exper. Luctation i. §13 For which reason..the best Correctors, or Refractors of the force of Colocynthis, are some kinds of Alkalies.

a. Optics. A medium or object which refracts light; a refracting lens.

ΘΚΠ

the world > physical sensation > sight and vision > optical instruments > instruments to refract, etc., light > [noun] > refractor

fool's paradise1644

refractor1722

1722 W. Cheselden Anat. Humane Body (ed. 2) iv. iv. 247 Tho' I have considered this Humour only as a refractor of Light, yet the first and greatest refraction is undoubtedly made in the Cornea.

1836–41 W. T. Brande Man. Chem. (ed. 5) 191 The ultimate direction of a refracted ray of light is influenced by the relative position of the surface of the refractor.

1854 B. Powell Pereira's Lect. Polarized Light (ed. 2) 139 A well-annealed piece of glass, all of whose parts possess equal elasticity, is a single refractor.

1933 Trans. Illuminating Engin. Soc. (U.S.) 28 274 A luminaire is a complete lighting unit consisting of a light source, together with its direct appurtenances, such as globe, reflector, refractor, housing, [etc.].

2000 Brit. Jrnl. Hist. Sci. 33 56 Arago..continued to study mica laminae through double refractors, and a few months later announced the discovery of a new kind of polarization.

b. Chiefly Astronomy. A telescope which uses a converging lens (the objective lens) to collect and focus the light; a refracting telescope. Contrasted with reflector n. 3.

ΘΚΠ

the world > physical sensation > sight and vision > optical instruments > instrument for distant vision > [noun] > telescope > refracting telescopes

refracting telescope1728

refracter1738

refractor1747

1747 B. Martin Philosophia Britannica I. 279 It appears, that in the Reflector, as well as the Refractor, the Error is (cæteris paribus) proportional to..the Cube of the Aperture of the Object-Metal.

1770 Philos. Trans. 1769 (Royal Soc.) 59 308 The situation of the telescopes, the reflector being within the observatory, and the two refractors..without it, favoured this purpose.

1857 D. Olmsted Compend. Nat. Philos. (new ed.) vi. vii. 396 In magnifying power the large Refractors, like the Cambridge telescope, may be sufficient for all purposes.

1891 Internat. Ann. Anthonys Photogr. Bull. 369 A reflector can always be mounted at far less cost than a refractor of equal aperture.

1905 Westm. Gaz. 17 Apr. 1/3 A large equatorial with a 26-in. photographic refractor at one end of the declination axis and a 30-in. reflector at the other.

1934 H. S. Jones Gen. Astron. (ed. 2) iv. 74 Comparing a reflector with a refractor of the same aperture, the loss of light by absorption in the object-glass is less than that by reflection at the mirror, except for very large apertures.

1998 Mod. Astronomer Mar. 21/1 (advt.) Achromatic rich field refractor for use as an astronomical or terrestrial telescope.

3. Geology. A stratum, or an interface between strata, detected in refraction shooting.

ΘΚΠ

the world > the earth > structure of the earth > structural features > sedimentary formation > [noun] > stratum > reflector or refractor

reflector1933

refractor1946

1946 Geophysics 11 40 The production in refraction shooting varies widely, depending on the surface conditions and also on the depth of the refractors.

1976 W. M. Telford et al. Appl. Geophysics iv. 365 Where a single refractor is being followed, a series of short refraction profiles are often shot rather than a long profile.

2001 A. Horowitz Jordan Rift Valley viii. 411 In the northern profile a 3.6 km/sec refractor underlying a 2.5 km/sec layer was detected at a depth of 420–520 m.

This entry has been updated (OED Third Edition, September 2009; most recently modified version published online March 2022).

单词	refractor
释义	refractorn. Brit. /rᵻˈfraktə/, U.S. /rəˈfræktər/, /riˈfræktər/ Origin: Formed within English, by derivation. Etymons: refract v., -or suffix. Etymology: < refract v. + -or suffix. Compare refracter n. †1. A thing which counters or repels another. Obsolete. rare. ΘΚΠ the mind > will > decision > obstinacy or stubbornness > [noun] > disobedient stubbornness > person refractary1616 refractory1627 refractor1682 1682 N. Grew Exper. Luctation i. §13 For which reason..the best Correctors, or Refractors of the force of Colocynthis, are some kinds of Alkalies. 2. a. Optics. A medium or object which refracts light; a refracting lens. ΘΚΠ the world > physical sensation > sight and vision > optical instruments > instruments to refract, etc., light > [noun] > refractor fool's paradise1644 refractor1722 1722 W. Cheselden Anat. Humane Body (ed. 2) iv. iv. 247 Tho' I have considered this Humour only as a refractor of Light, yet the first and greatest refraction is undoubtedly made in the Cornea. 1836–41 W. T. Brande Man. Chem. (ed. 5) 191 The ultimate direction of a refracted ray of light is influenced by the relative position of the surface of the refractor. 1854 B. Powell Pereira's Lect. Polarized Light (ed. 2) 139 A well-annealed piece of glass, all of whose parts possess equal elasticity, is a single refractor. 1933 Trans. Illuminating Engin. Soc. (U.S.) 28 274 A luminaire is a complete lighting unit consisting of a light source, together with its direct appurtenances, such as globe, reflector, refractor, housing, [etc.]. 2000 Brit. Jrnl. Hist. Sci. 33 56 Arago..continued to study mica laminae through double refractors, and a few months later announced the discovery of a new kind of polarization. b. Chiefly Astronomy. A telescope which uses a converging lens (the objective lens) to collect and focus the light; a refracting telescope. Contrasted with reflector n. 3. ΘΚΠ the world > physical sensation > sight and vision > optical instruments > instrument for distant vision > [noun] > telescope > refracting telescopes refracting telescope1728 refracter1738 refractor1747 1747 B. Martin Philosophia Britannica I. 279 It appears, that in the Reflector, as well as the Refractor, the Error is (cæteris paribus) proportional to..the Cube of the Aperture of the Object-Metal. 1770 Philos. Trans. 1769 (Royal Soc.) 59 308 The situation of the telescopes, the reflector being within the observatory, and the two refractors..without it, favoured this purpose. 1857 D. Olmsted Compend. Nat. Philos. (new ed.) vi. vii. 396 In magnifying power the large Refractors, like the Cambridge telescope, may be sufficient for all purposes. 1891 Internat. Ann. Anthonys Photogr. Bull. 369 A reflector can always be mounted at far less cost than a refractor of equal aperture. 1905 Westm. Gaz. 17 Apr. 1/3 A large equatorial with a 26-in. photographic refractor at one end of the declination axis and a 30-in. reflector at the other. 1934 H. S. Jones Gen. Astron. (ed. 2) iv. 74 Comparing a reflector with a refractor of the same aperture, the loss of light by absorption in the object-glass is less than that by reflection at the mirror, except for very large apertures. 1998 Mod. Astronomer Mar. 21/1 (advt.) Achromatic rich field refractor for use as an astronomical or terrestrial telescope. 3. Geology. A stratum, or an interface between strata, detected in refraction shooting. ΘΚΠ the world > the earth > structure of the earth > structural features > sedimentary formation > [noun] > stratum > reflector or refractor reflector1933 refractor1946 1946 Geophysics 11 40 The production in refraction shooting varies widely, depending on the surface conditions and also on the depth of the refractors. 1976 W. M. Telford et al. Appl. Geophysics iv. 365 Where a single refractor is being followed, a series of short refraction profiles are often shot rather than a long profile. 2001 A. Horowitz Jordan Rift Valley viii. 411 In the northern profile a 3.6 km/sec refractor underlying a 2.5 km/sec layer was detected at a depth of 420–520 m. This entry has been updated (OED Third Edition, September 2009; most recently modified version published online March 2022). < n.1682
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