LASER SCATTERING METHOD AND EQUIPMENT FOR MEASURING SURFACE TENSION/INTERFACE TENSION

摘要

PROBLEM TO BE SOLVED: To provide a convenient and highly reliable laser scattering method and equipment for measuring surface tension/interface tension.;SOLUTION: In the laser scattering method for scattering laser light impinging on the surface 2 or the interface of liquid by a wave generated thereon, determining the frequency of the wave through the interference of scattering light and reference light and calculating surface tension or interface tension, the laser light is not split to have a plurality of optical axes but a part of light in a beam spreading on a single optical axis is used for generating the signal light and the remaining light is used partially or entirely as the reference light being detected by a photodetector 3.;COPYRIGHT: (C)2002,JPO