PHOTOPHONE
Photophone
The photophone is a telecommunications device which allowed for the transmission of speech on a beam of light. It was invented jointly by Alexander Graham Bell and his assistant Charles Sumner Tainter on February 19, 1880, at Bell's laboratory at 1325 L Street in Washington, D.C. Both were later to become full associates in the Volta Laboratory Association, created and financed by Bell.The above text is a snippet from Wikipedia: Photophone
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photophone
Noun
- a device that transmitted sound on a beam of light
The above text is a snippet from Wiktionary: photophone
and as such is available under the Creative Commons Attribution/Share-Alike License.