| 释义 |
scioptric, a. and n. Now rare or Obs.|saɪˈɒptrɪk|
[f. Gr. σκιά shadow, after catoptric, dioptric. Cf. scioptic.]
A. adj. scioptric ball: a ball of wood with a hole made through it in which a lens is placed, used in the camera obscura.
a1764J. Harris Treat. Optics (1775) 269 For holding the lens, there is a little convenient apparatus to be had ready in the shops, called a Scioptric-ball. 1783P. Fletcher's Purple Isl. v. xxxvi. note, Herein is described the Camera Obscura,..which exhibit the pictures of external objects in their proper colours, by means of a convex glass, or Scioptric Ball, either in a darkened chamber, or portable box. c1790J. Imison Sch. Arts I. 270 A scioptric ball and socket being fastened against a hole in the window-shutter in a darkened chamber. 1797Encycl. Brit. (ed. 3) VI. 36/1 Put the object⁓glass of a 10 or 12 feet telescope into the scioptric ball. 1842Brande Dict. Sci. etc., Scioptic Ball or Scioptric Ball.
B. n. = scioptric ball: see A.
1704J. Harris Lex. Techn. I. s.v. Obscura Camera, Such ready fitted are now commonly sold..on Ludgate-hill, and are called Scioptricks. [1706Phillips (ed. Kersey), Scioptricks, a part of Optics. See Obscura Camera.] 1721in Bailey. |