| 单词 | occulter | 
| 释义 | occultern.  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). < | 
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