The Raman Effect in Crystals
Abstract
THE thermal agitation of the atoms in solids results, as was shown by Raman (NATURE, Jan. 12, 1922, and Jan. 6, 1923), in a noticeable blue opalescence in the interior of such transparent crystals as quartz or ice when they are traversed by a strong beam of sunlight. In his address on the discovery of a new type of secondary radiation (Indian Journal of Physics, Mar. 31, 1928) Raman described observations showing that monochromatic light scattered in this manner by crystals is accompanied by radiations of altered wave-length in the same way as in the case of gases and liquids. The difference between the incident and scattered frequencies corresponds, of course, to a characteristic infra-red frequency of the crystal.
- Publication:
-
Nature
- Pub Date:
- September 1928
- DOI:
- 10.1038/122477a0
- Bibcode:
- 1928Natur.122..477K