Cymatics: Chladni Plate - Sound, Vibration and SandAmazing Resonance Experiment! Plaques d'Ernst ChladniChladni Figures - random couscous snaps into beautiful patternsErnst Florens Friedrich Chladni was a German physicist and musician. His most important work, for which he is sometimes labeled the father of acoustics, included research on vibrating plates and the calculation of the speed of sound for different gases. He also undertook pioneering work in the study of meteorites and is regarded by some as the father of meteoritics.