抄録
Measurement was performed on the velocity of ultrasonic waves in concentric solutions of NaCl, KCl, KBr, Kl and MgSO_4 at temperatures of 15°〜55°and at various frequencies, but no dispersion was observed between the limits of the frequencies emplpyed:NaCl(1. 43〜12. 87Mc/sec), KCl(0. 47〜12. 87Mc/sec), KBr(4. 29〜12. 87Mc/sec), Kl(4. 29〜12. 87Mc/sec), MgSO_4(0. 47〜2. 86Mc/sec). The method of ultrasonic interferometry was employed for velocity determination at frequencies between 0. 47 and 2. 86 Mc/sec, and the method of the diffraction of light by ultrasonic waves at frequencies between 1. 43 and 12. 87Mc/sec.
