When completed in 1887, the West Orange complex was the most modern and ... thus a major field for experimentation on both quality and mass production. The Edison Disc Phonograph of 1911 paired the ...

On December 7, 1877 Thomas Edison demonstrated his phonograph at the New York City offices of the nation's leading technical weekly publication, Scientific American. The following report set off ...

He thought his device could amplify the particles, similar to how a human voice can be amplified and recorded by a phonograph. Edison wrote plans and theories for this ghost machine, but it is ...