I am making a sonoluminescence experiment and part of it is two transducers touching a glass beaker with water. However, I don't know exactly how to measure the capacitance. With the picture attached, the places marked in green with "C?" written on them are where I was told there would be capacitance in the overall circuit to measure. Can you tell me if these places are right, and if there are more places where capacitance will be held, and how to measure the capacitance of these places accurately. I need this so I can make an inductor coil based on the capacitave reactance of the transducers so I can achieve electrical resonance in the circuit. Thank you!