- #1

member 428835

Suppose we take a drop of fluid and let it sit on a substrate, and then vibrate the substrate. Doing this excites different modes. If someone where to analyze the vibrations, would they take an FFT of the interface, basically reconstructing it from basis functions (harmonics), where the FFT gives the coefficients (magnitude) of each of the basis functions?

Is my understanding correct? I have some followups if so.