Аннотация:
The method of measuring of non-linear parameter of fluids on a relation of the first and second harmonic is offered at contortion of an ultrasonic wave. On quantity of this parameter interior pressure is calculated. The offered method also allows to calculate immediately intermolecular distance, in the guess of applicability of the equation of Tet for explored fluids. Comparison of observed dates with the data of other authors gained by other methods, for two fluids – water and transformer oil is spent. Influence of concentration NaCl in a water solution on interior pressure is estimated.
