Search This Blog

Thursday, April 28, 2011

Phonographs


The phonograph, record player, or gramophone is a device that was most commonly used from the late 1870s through the 1980s for playing sound recordings. The recordings played on such a device generally consist of wavy lines that are either scratched, engraved, or grooved onto a rotating cylinder or disc. As the cylinder or disc rotates, a needle or other similar object on the device traces the wavy lines and vibrates, reproducing sound waves.






   

Check out this interesting article


   

No comments:

Post a Comment