Characterization of liquids using gas bubbles

A method for measuring properties of a liquid which comprises:

• forming a bubble in the liquid by cavitation;
• measuring the resonance frequency of the bubble;
• measuring the shape oscillation frequency of the bubble;
• measuring the terminal velocity of the bubble in the liquid;
• and
• determining the liquid property or properties from the measured
• resonance frequency of the bubble, the shape oscillation frequency of the
• bubble, and the terminal velocity of the bubble.

An apparatus for measuring properities of a liquid which comprises:

• means for forming a bubble in the liquid;
• means for measuring the resonance frequency of the bubble;
• means for measuring the shape oscillation frequency of the bubble;
• means for measuring the terminal velocity of bubble as it ascends in the liquid;
• and
• means for determining the liquid property or properities from the measured resonance frequency of the bubble, the shape oscillation frequency of the bubble, and the terminal velocity of the bubble.

An apparatus for measuring properities of a liquid which comprises:

• cavitation means for forming abubble in the liquid;
• means for measuring the resonance frequency of the bubble;
• means for measuring the shape oscillation frequency of the bubble;
• means for measuring the terminal velocity of the bubble as it ascends in the liquid;
• and
• means for determining the liquid property or properties from the measured resonance frequency of the bubble, the shape oscillation frequency of the bubble, and the terminal velocity of the bubble.