The Voice of Alexander Graham Bell...
Alexander Graham Bell worked with sound, tinkering... ...thsonian more than 400 discs and cylinders of his audio experiments, but until recently there was no way... ...nia, had succeeded in extracting sound from early recordings made in Paris in 1860. He and his team created hi... ...ution optical scans conve...
http://www.neatorama.com/2013/04/25/The-Voice-of-Alexander-Graham-Bell/



