Prodigal-Genius-Biography-of-Nikola-Tesla_page_136

Prodigal-Genius-Biography-of-Nikola-Tesla | page 136 | https://thedailydialectics.com/pdfs/tesla/Prodigal-Genius-Biography-of-Nikola-Tesla/Prodigal-Genius-Biography-of-Nikola-Tesla.pdf

friends. It was a mechanical oscillator, and was used to produce vibrations. The motor-driven device that the barber straps on his hand to give a patron an "electric massage" is a descendant of Tesla's mechanical oscillator. There is, of course, nothing electric about an "electric massage" except…