单词 | visometer |
释义 | visometern. 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). < |
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