ePrints@IIScePrints@IISc Home | About | Browse | Latest Additions | Advanced Search | Contact | Help

Fine Structure of the Rayleigh Line in Amorphous Substances

Krishnan, RS (1950) Fine Structure of the Rayleigh Line in Amorphous Substances. In: Nature, 165 (4206). pp. 933-934.

Full text not available from this repository. (Request a copy)
Official URL: http://www.nature.com/nature/journal/v165/n4206/ab...


As is well known, when monochromatic light scattered by a liquid is examined under high resolution it exhibits a fine structure: an undisplaced central line and two lines on either side with wavelengths slightly different from that of the incident light. The appearance of the displaced components was first predicted by Brillouin1. On the basis of his theory, the observed displacements of frequency are regarded as a Doppler effect arising from the reflexion of the light wave by the progressive sound waves of thermal origin in the scattering medium. The frequency shift of the so-called Brillouin components is given by the formula where nu and c are the velocities of sound and light in the medium and theta is the angle of scattering. That the effect contemplated by Brillouin does arise in liquids and crystals is now a well-established experimental fact.

Item Type: Editorials/Short Communications
Publication: Nature
Publisher: Nature Publishing Group
Additional Information: Copyright of this article belongs to Nature Publishing Group.
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 03 Jun 2010 10:26
Last Modified: 03 Jun 2010 10:26
URI: http://eprints.iisc.ac.in/id/eprint/27787

Actions (login required)

View Item View Item