| 释义 |
Wollaston Physics.|ˈwʊləstən|
[The name of W. H. Wollaston (1766–1828), English physicist.]
Wollaston('s) prism: a prism made by cementing together two prisms of calcite or quartz with their optic axes perpendicular to each other and to the incident light, which is thereby separated into two diverging beams of polarized light.
1890T. Preston Theory of Light xi. 258 Wollaston's Prism.—This prism differs from that of Rochon only in that the optic axis of the first prism ABD is parallel to the face AB, so that it is merely Rochon's prism turned through a right angle. 1970Nature 18 July 264/2 The Wollaston prism, which splits the incident starlight into two beams, polarized in mutually perpendicular planes, was placed in an adjustable mounting above the spectrograph slit. |