Antique circa 1895 engraving, illustration of a U.S. Patent Radiophone, also known as a photophone. The photophone (later given the alternate name radiophone) is a telecommunications device which allowed for the transmission of speech on a beam of light, invented by Alexander Graham Bell and his assistant Charles Sumner Tainter. Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/stock-photo-antique-circa-1895-engraving-illustration-of-a-us-patent-radiophone-96351183.html
RMFGN4WK–Antique circa 1895 engraving, illustration of a U.S. Patent Radiophone, also known as a photophone. The photophone (later given the alternate name radiophone) is a telecommunications device which allowed for the transmission of speech on a beam of light, invented by Alexander Graham Bell and his assistant Charles Sumner Tainter.
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