(The wave source is in the middle, pillars are randomly distrubuted, we draw the wave amplitude A and average energy (A^2) together (and vice versa)).
00:00 Energy (main) and amplitude (inset)
00:00 Amplitude (main) and energy (inset)
Music: F. Chopin, Fantaisie - Impromptu, Op. 66 - (FrankLevy / Musopen.org)