Dispersion of Thermal Ripplon on Free Surfaces of Pure Liquids Measured up to 6 MHz
- 1 December 1990
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 29 (12A) , L2247-2249
- https://doi.org/10.1143/jjap.29.l2247
Abstract
The dispersion and damping constant of the thermally excited surface-tension wave (ripplon) have been measured for free surfaces of water and some other liquids. The upper limit of the frequency range observed is extended up to 6 MHz with a newly developed light-scattering technique. The behavior of the ripplon is well described by the hydrodynamic theory throughout the whole experimental range, leaving no possibility of the surface viscosity which has been suggested by previous studies.Keywords
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