quelleflemme Non classé 19 August 2018 1 Minute tilthat: TIL in 1880 Alex Graham Bell, inventor of the telephone, also invented the photophone, a device that transmits sound using visible light. Although he called it his greatest invention, it wasn’t until the 1980s, over a century later, that it precursed fibre optics, the backbone of the modern Internet via reddit.com Partager : Share on X (Opens in new window) X Share on Facebook (Opens in new window) Facebook Like Loading... Related Published by quelleflemme just tryna get by View all posts by quelleflemme Published 19 August 2018
quelleflemme's blog 