= refractor, n. 2b.
| 单词 | θ64754 |
| 释义 | the world > physical sensation > sight and vision > optical instruments > instrument for distant vision > [noun] > telescope > refracting telescopes (4) refracting telescope1728 = refractor, n. 2b. refracter1738 A device which makes use of or produces refraction of light; (in early use) †a refracting telescope (= refractor, n. 2b) (obsolete). refractor1747 Chiefly Astronomy. A telescope which uses a converging lens (the objective lens) to collect and focus the light; a refracting telescope. Contrasted… Subcategories:— parts of (1) |
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