Definitions for Photophone
pho·to·phone

WiktionaryRate this definition:0.0 / 0 votes

1. photophonenoun

   a device that transmitted sound on a beam of light

WikipediaRate this definition:0.0 / 0 votes

1. Photophone

   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 in Washington, D.C. Both were later to become full associates in the Volta Laboratory Association, created and financed by Bell. On June 3, 1880, Bell's assistant transmitted a wireless voice telephone message from the roof of the Franklin School to the window of Bell's laboratory, some 213 meters (about 700 ft.) away.Bell believed the photophone was his most important invention. Of the 18 patents granted in Bell's name alone, and the 12 he shared with his collaborators, four were for the photophone, which Bell referred to as his "greatest achievement", telling a reporter shortly before his death that the photophone was "the greatest invention [I have] ever made, greater than the telephone".The photophone was a precursor to the fiber-optic communication systems that achieved worldwide popular usage starting in the 1980s. The master patent for the photophone (U.S. Patent 235,199 Apparatus for Signalling and Communicating, called Photophone) was issued in December 1880, many decades before its principles came to have practical applications.

Webster DictionaryRate this definition:0.0 / 0 votes

1. Photophonenoun

   an apparatus for the production of sound by the action of rays of light

2. Etymology: [Photo- + Gr. fwnh` sound.]

WikidataRate this definition:0.0 / 0 votes

1. 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. On June 21, 1880, Bell's assistant transmitted a wireless voice telephone message of considerable distance, from the roof of the Franklin School to the window of Bell's laboratory, some 213 meters away. Bell believed the photophone was his most important invention. Of the 18 patents granted in Bell's name alone, and the 12 he shared with his collaborators, four were for the photophone, which Bell referred to as his 'greatest achievement', telling a reporter shortly before his death that the photophone was "the greatest invention [I have] ever made, greater than the telephone". The photophone was a precursor to the fiber-optic communication systems which achieved worldwide popular usage starting in the 1980s. The master patent for the photophone, was issued in December 1880, many decades before its principles came to have practical applications.

Chambers 20th Century DictionaryRate this definition:0.0 / 0 votes

1. Photophone

   fō′tō-fōn, n. an apparatus for transmitting articulate speech to a distance along a beam of light. [Gr. phōs, phōtos, light, phōnē, sound.]

Anagrams for Photophone »

1. phonophote

How to pronounce Photophone?

1. Alex

   US English

   David

   US English

   Mark

   US English

   Daniel

   British

   Libby

   British

   Mia

   British

   Karen

   Australian

   Hayley

   Australian

   Natasha

   Australian

   Veena

   Indian

   Priya

   Indian

   Neerja

   Indian

   Zira

   US English

   Oliver

   British

   Wendy

   British

   Fred

   US English

   Tessa

   South African

How to say Photophone in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of Photophone in Chaldean Numerology is: 7

2. Pythagorean Numerology

   The numerical value of Photophone in Pythagorean Numerology is: 6

References

1. ^ Wiktionary
   https://en.wiktionary.org/wiki/Photophone
2. ^ Wikipedia
   https://en.wikipedia.org/wiki/Photophone
3. ^ Webster Dictionary
   https://www.merriam-webster.com/dictionary/Photophone
4. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=Photophone
5. ^ Chambers 20th Century Dictionary
   https://www.gutenberg.org/files/37683/37683-h/37683-h.htm#:~:text=Photophone