Cymatics features audio visualized by science experiments - including the Chaldni Plate, Ruben's Tube, Tesla Coil and Ferro Fluid. Cymatics, from the Ancient Greek: κῦμα, meaning, “wave", is a subset of modal vibrational phenomena. The term was coined by Hans Jenny (1904-1972), a Swiss follower of the philosophical school known as anthroposophy. Typically the surface of a plate, diaphragm, or membrane is vibrated, and regions of maximum and minimum displacement are made visible in a thin coating