“Music is sound that’s organized by people on purpose, to dance to, to tell a story, to make other people feel a certain way, or just to sound pretty or be entertaining.”
– Catherine Schmidt-Jones (music teacher, Champaign, IL, USA)
Couverture : Neon lamp traces sound wave’s picture, by Bell Labs, published in Popular Science, Sept. 1950 (p.145).
Illus. from “A photographic method for displaying sound wave and microwave space pattern” by W. E. Kock and F. K. Harvey (Oct. 27, 1950).