Electrophone

• Publisher: Elsevier Science
• Year: 1879
• Tongue: English
• Weight: 62 KB
• Volume: 107
• Category: Article
• ISSN: 0016-0032
• DOI: 10.1016/0016-0032(79)90580-5

✦ Synopsis

Ader uses a sort of" drum, having on one side a diaphragm of parchment paper, about 15 cm. (5"91 in.) in diameter, ill the centre of which are circularly arranged six bits of tinned iron, 1 cm. ('374 in.) long, and 2 nim. ('079 in.) wide. upon these act six microscopic horse-shoe electro-magnet~, Which are c~lineeted and set in action by a carbon-speaking microphone. A Lc~lanch~ pile of three elements transmits words and musi(, so that conversation can be heard 5 meters (!6"4 ft.) from the instrument. The energetic efforts are due to the minuteness of the eleetrormagnet.s, which, can be magnetized and demagnetized much more rapidly, than i.n other systems.--Comptes Rendus.

C.