| 单词 | star gauge |
| 释义 | > as lemmasstar gauge star gauge n. (a) (Astronomy, now historical) (W. Herschel's term for) a determination of the number of stars visible in a given region of the sky, by averaging a number of observations; (b) a gauge with radiating steel points for measuring the bore of a gun barrel at any part of its length. ΘΚΠ the world > the universe > cosmology > science of observation > astronomical calculation > [noun] > stars star gauge1784 star-gauging1845 star count1889 society > armed hostility > military equipment > production and development of arms > [noun] > manufacture of firearms and ammunition > instruments newel1611 spanner1639 height-board1672 height-rule1692 star gauge1784 spindle1842 gun-pendulum1867 1784 W. Herschel in Philos. Trans. (Royal Soc.) 74 445 I call it Gaging the Heavens, or the Star-Gage. It consists in repeatedly taking the number of stars in ten fields of view of my reflector very near each other, and by adding their sums, and cutting off one decimal on the right, a mean of the contents of the heavens, in all the parts which are thus gaged, is obtained. 1847 J. F. W. Herschel Results Astron. Observ. 373 A system of star-gauges was set on foot. 1861 J. G. Benton Course Instr. Ordnance & Gunnery iii. 191 The star-guage [sic] is an instrument for measuring the diameter of the bore at any point. 1985 W. S. Brophy Springfield 1903 Rifles ii. 207/1 The star gauge is used to measure the interior of a gun barrel and does not make an average or poor barrel better. 2010 M. Beech Large Hadron Collider v. 121 The stellar universe that Herschel's star gauges revealed was disk-like in shape. < as lemmas |
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