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The First Mobile Phone Call – Alexander Graham Bell Strikes Again

Peter Judge Mobility Editor of Techworld 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.

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