| 释义 |
diˈoptrical, a.
[f. as prec. + -al1.]
†1. = dioptric a. 1. Obs.
1612Brerewood Lang. & Relig. xiii. 134 Of which height..it is observed in Pliny, that Dicæarchus, by dioptrical instruments, found the hill Pelius..to be. 1656Blount Glossogr., Dioptrical, pertaining to Dioptra.
2. = dioptric a. 2, 3.
1664Power Exp. Philos. Pref. 1 Dioptrical Glasses are but a Modern Invention. 1677A. Horneck Gt. Law Consid. ii. (1704) 17 Little animals..viewed through Dioptrical glasses. 1769S. Hardy (title), A Translation of Scheffer's Treatise on the Emendation of Dioptrical Telescopes.
3. Of or belonging to dioptrics; skilled in dioptrics.
1664Power Exp. Philos. i. 78 Dioptrical Artists. 1752Short in Phil. Trans. LIX. 507 Of a radius somewhat longer than the focal length you want, for a dioptrical reason. 1800Young ibid. XCI. 27 Dioptrical propositions.
†4. = dioptric a. 4. Obs.
1759Sterne Tr. Shandy I. xxiii, To have gone softly, as you would to a dioptrical bee-hive, and look'd in.
Hence diˈoptrically adv., by means of refraction.
1732Hist. Litteraria III. 363 To produce very extraordinary Effects..either dioptrically or catoptrically. 1849–52Todd Cycl. Anat. IV. 1441/2 Dioptrically-formed coloured margins. 1883Carpenter in Encycl. Brit. XVI. 266/1 s.v. Microscope, Images dioptrically formed of the general outlines and larger details of microscopic objects. |