| 单词 | water telescope |
| 释义 | > as lemmaswater telescope water telescope n. (a) Astronomy a telescope whose tube is filled with water, used esp. to investigate aberration of light (see aberration n. 4) and the propagation of light in different media (now historical and rare); (b) an instrument used to make observations beneath the surface of water, consisting of a container or tube with a transparent bottom; = water glass n. 4. ΘΚΠ the world > physical sensation > sight and vision > optical instruments > instrument for distant vision > [noun] > water glass water telescope1782 water glass1804 sponge-glass1885 sea-glass1895 1782 Philos. Trans. (Royal Soc.) 72 63 DB..denotes the position of Dr. Bradley's telescope, when the aberration of the star is at its maximum, and EMO parallel to it, denotes the position of the water telescope. 1850 Edinb. New Philos. Jrnl. 49 121 We are indebted to Mr Mitchell,..for having brought this instrument into notice in the public prints, under the name of Norwegian water-telescope, on the shores of which country it is stated to be much used in fishing. 1871 Νature 8 June 103/1 The observations of γ Draconis, the star which passes very near the Zenith of Greenwich, with the Water Telescope. 1913 M. Niles Stellar Aberration Simplification Stud. 87 It [sc. the eye] is in general like a Boscovich or water-telescope, although its humors are of various refracting powers. 2011 J. S. Weis Do Fish Sleep? vii. 123 A glass-bottomed view box or ‘water telescope’ will greatly improve what you can see. < as lemmas |
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