.jpg)
Photophone
Sign in to savethumb|alt=An image of darkened brass historical plaque with a streak of green corrosion running down it, mounted on the exterior side of a brick building. |A historical plaque on the side of the Franklin School in Washington, D.C. which marks one of the points from which the photophone was demonstrated thumb|A diagram from one of Bell's 1880 papers
~21 min read
Encyclopedic overview
9 sectionsContents
- Design
- First successful wireless voice communications
- Reception and adoption
- Further development
- Commemorations
- See also
- References
- Further reading
- External links
thumb|alt=An image of darkened brass historical plaque with a streak of green corrosion running down it, mounted on the exterior side of a brick building. |A historical plaque on the side of the Franklin School in Washington, D.C. which marks one of the points from which the photophone was demonstrated thumb|A diagram from one of Bell's 1880 papers
The photophone is a telecommunications device that allows 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 NW in Washington, D.C. Both were later to become full associates in the Volta Laboratory Association, created and financed by Bell.
Excerpted from Wikipedia’s “Photophone” article, available under the CC BY-SA 4.0 licence.