| 释义 |
Schröder|ˈʃrøːdə(r)|
Also Schroeder.
The name of H. G. F. Schröder (1810–85), German mathematician and physicist, used attrib. and in the possessive to designate an optical illusion described by him (see Ann. der Physik und Chem. (1858) CV. 307), in the form of a line drawing of a staircase drawn without convergence of receding parallel lines, so that one appears successively to look down at the top and up at the underside of the staircase as the perspective reverses.
1898E. C. Sanford Course in Exper. Psychol. II. vii. 256 ‘Schröder's Stair Figure’..generally appears first as the upper flight of steps. 1901, etc. [see Necker1]. 1925J. P. C. Southall tr. J. von Kries in tr. Helmholtz's Treat. Physiol. Optics III. 597 A similar reversal of the impressions of distance occurs in looking at Schroeder's ‘staircase’ diagram.., especially if it is turned round. 1957Acta Psychologica XIII. 86 With the Schröder stairs, now, a new means was found to ask the subject without using the words ‘Up’ or ‘Down’. The S was simply asked: ‘From which end would you approach the stairs in order to mount them, from Right or from Left?’ 1974Sci. Amer. July 101/1 The Schröder stairs, another 19th-century reversible-perspective illusion,..is the theme of Escher's 1953 lithograph Relativity. |