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Peter Judge Mobility Editor of Techworld http://www.techworld.com/html/bios.cfm#judge shared this tidbit with me todayOn February 22,1880 Alexander Graham Bell and his cousin Charles Bell communicated over the Photophone, a remarkable invention conceived of by Bell and executed by Sumner Tainter. [Grosvenor] This device transmitted voice over a light beam. A person’s voice projected through a glass test tube toward a thin mirror which acted as a transmitter. Acoustical vibrations caused by the voice produced like or sympathetic vibrations in the mirror.http://www.privateline.com/PCS/history4.htm

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