cymatics: The study of sound
The science of sonic vibrations and their effects upon matter
CYMATICS: (from Ancient Greek: κῦμα, romanized: kŷma, meaning “wave”) the term coined by Hans Jenny to describe a subset of modal vibrational (acoustic) phenomena (and effects) of sound waves
ACOUSTICS: (derived from the Greek akoustos, meaning “heard”) the science concerned with the production, control, transmission, reception, and effects of sound
SPEED OF SOUND: the transmission of vibrations by friction using standing waves