occultern.

Brit.

/əˈkʌltə/,

/ˈɒkʌltə/, U.S.

/əˈkəltər/

Origin: Formed within English, by derivation. Etymons: occult v., -er suffix¹.

Etymology: < occult v. + -er suffix¹.

Something that occults; spec. (a) a device for temporarily cutting off a lighthouse light; (b) a device in a telescope or other instrument for cutting off the direct light of the sun or other bright object.

ΘΚΠ

the world > matter > light > darkness or absence of light > intercepting or cutting off of light > [noun] > that which > specific

sunshade1741

sunbreak1891

occulter1902

shutter1910

1902 Encycl. Brit. XXX. 256/1 This light shows, instead of one prolonged flash at intervals of one minute, as would be produced by the apparatus in the absence of a gas occulter, a group of short flashes.

1906 Science 23 Mar. 458/2 My modified form of Burckhalter revolving occulter was employed on the corona.

1955 Philos. Rev. 64 492 It is uncertain what Leibniz meant by ‘becoming conscious’; whether it means a focussing of attention, an intensification of the modification of thought, or simply the clearing away of occulters and dimmers.

1982 Science 26 Feb. 1097/3 The occulter artificially eclipses the sun, preventing the blinding direct light of the sun's photosphere from reaching the focal plane, or even the objective lens.

2000 G. F. Douglas-Sherwood Gloss. Lighthouse Service Terminol. (Assoc. Lighthouse Keepers) Occulting clock (Occulter), a mechanical apparatus powered by a falling weight or spring tension to momentarily obscure a constantly burning lamp to give the light an occulting character.

This entry has been updated (OED Third Edition, March 2004; most recently modified version published online March 2022).

单词	occulter
释义	occultern. Brit. /əˈkʌltə/, /ˈɒkʌltə/, U.S. /əˈkəltər/ Origin: Formed within English, by derivation. Etymons: occult v., -er suffix¹. Etymology: < occult v. + -er suffix¹. Something that occults; spec. (a) a device for temporarily cutting off a lighthouse light; (b) a device in a telescope or other instrument for cutting off the direct light of the sun or other bright object. ΘΚΠ the world > matter > light > darkness or absence of light > intercepting or cutting off of light > [noun] > that which > specific sunshade1741 sunbreak1891 occulter1902 shutter1910 1902 Encycl. Brit. XXX. 256/1 This light shows, instead of one prolonged flash at intervals of one minute, as would be produced by the apparatus in the absence of a gas occulter, a group of short flashes. 1906 Science 23 Mar. 458/2 My modified form of Burckhalter revolving occulter was employed on the corona. 1955 Philos. Rev. 64 492 It is uncertain what Leibniz meant by ‘becoming conscious’; whether it means a focussing of attention, an intensification of the modification of thought, or simply the clearing away of occulters and dimmers. 1982 Science 26 Feb. 1097/3 The occulter artificially eclipses the sun, preventing the blinding direct light of the sun's photosphere from reaching the focal plane, or even the objective lens. 2000 G. F. Douglas-Sherwood Gloss. Lighthouse Service Terminol. (Assoc. Lighthouse Keepers) Occulting clock (Occulter), a mechanical apparatus powered by a falling weight or spring tension to momentarily obscure a constantly burning lamp to give the light an occulting character. This entry has been updated (OED Third Edition, March 2004; most recently modified version published online March 2022). < n.1902
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