| 单词 | erecting-glass |
| 释义 | > as lemmaserecting-glass 2. attributive, as in erecting-eye-piece, erecting-glass, erecting-prism: (see quots.) ΚΠ 1837 C. R. Goring & A. Pritchard Micrographia 144 No achromatic erecting eye-piece..can be made with so few as three lenses. 1874 E. H. Knight Pract. Dict. Mech. Erecting eye-piece, a combination of four lenses used for terrestrial telescopes, and so arranged as to exhibit the objects viewed in an erect position. 1874 E. H. Knight Pract. Dict. Mech. Erecting-glass, a tube with two lenses, slipped into the inner end of the draw-tube of a microscope, serving to erect the inverted image. 1874 E. H. Knight Pract. Dict. Mech. Erecting-prism, a contrivance of Nachet's for erecting the inverted image produced by a compound microscope, by means of a single rectangular prism placed over the eye-piece. < as lemmas |
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