Dependence of coefficient of ultrasonic velocity on coeffcient of free length in organic liquids

Baized on the Jacobson's free length theory and the pressure coefficient and temperature coefficiefit of freelength in liquids,the relationship between the pressure coefficient of ultrasonic velocity and the pressure coefficient of freelength,and the relationship between the temperature coefficient of ultrasonic velocity and the temperature coefficient offree length were studied.Exact relation equations were put forward.Calculated values by using the above equations arein agreement with the measured values.