Playback: 130-year-old sounds revealed

(PhysOrg.com) -- In the early 1880s, three inventors—Alexander Graham Bell, Chichester Bell and Charles Sumner Tainter, collectively making up the Volta Laboratory Associates—brought together their creativity and expertise in a laboratory on Connecticut Avenue in Washington, D.C., to record sound. In one experiment, Nov. 17, 1884, they recorded the word “barometer” on a glass disc with a beam of light. This disc and about 200 other experimental recordings from their laboratory were packed up for safekeeping, given to the Smithsonian and, with a few exceptions, never played again.

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