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单词 visometer
释义

visometern.

Etymology: < Latin vīsus sight + -ometer comb. form. Compare visuometer n. at visuo- comb. form 2.Previous versions of the OED give the stress as: viˈsometer.
rare.
(See quot. 1856.)
ΘΚΠ
the world > physical sensation > sight and vision > optical instruments > instruments for measuring > [noun] > focal length
visuometer1847
visometer1856
1856 N. Brit. Rev. Nov. 178 The first person..who constructed and used an apparatus, which he calls a visometer, for determining the focal length of each eye, was Mr. Salom of Edinburgh.
This entry has not yet been fully updated (first published 1917; most recently modified version published online June 2019).
<
n.1856
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