Scientists are already able to obtain sound from recordings produced in Alexander Graham Bell’s laboratory.
Bell had created the recordings to protect against having his ideas compromised and had delivered them to the Smithsonian Institute, his staff have been working on enhancing the quality of sound of Thomas Edison’s phonograph. It’s not recognized if any of the voices on the recordings is that of Bell himself nevertheless there was only 2 other folks dealing with him at that time indicating that one of them may be him.
Bell, made famous by his invention of the telephone, was working with a team of researchers in his Volta laboratory in the 1880’s in Washington D.C. and as a precaution against having his ideas stolen by competing teams, periodically sent samples of the results of his and his team’s efforts to the Smithsonian Institute, also in Washington, for safe-keeping. Unfortunately, devices to play the recordings were not sent along as well, which meant the recordings sat unheard in storage for a century and a quarter.
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http://www.physorg.com/news/2011-12-team-high-tech-optical-technique-year.html
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