FIELD: measuring technique.
SUBSTANCE: method comprises generating thermocapillary flow in the layer of liquid by means of laser beam, which leads to the dynamic deformation of the free surface of the liquid as a hollow, determining the thickness of the layer from the time interval between the moment of switching in of the laser beam and the moment of the beginning of the measurements of the diameter or the distribution of the intensity of light spot observed on the screen mounted in the cross-section of the laser beam reflected from the hollow.
EFFECT: reduced measurement time and simplified method.
3 dwg
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