[Hegewisch Dupa]

I don’t know; I’ll guess Archidemedes (and forgive my butchered spelling). That is a fascinating topic though; I will honestly look it up once you provide the answer. Cool.

[hoosiermama]

Can't spell schidt either....Pythagoras....He played with strings....A string divided in half and plucked produces half the number of vibrations....(an Octave) 440 A 880 A’ etc.
Also playing with strings developed the geometric theorem.