Disambiguation evidence for photophone via surface form
"Photophone"
As subject (48)
Triples where this entity appears as subject under the
label "Photophone".
| Predicate | Object |
|---|---|
| alsoKnownAs | radiophone using light (historical description) ⓘ |
| category | historical communication technology ⓘ |
| communicationPrinciple | modulation of light intensity by sound ⓘ |
| demonstratedBy | Alexander Graham Bell ⓘ |
| demonstrationLocation | Washington, D.C. ⓘ |
| demonstrationYear | 1880 ⓘ |
| era | late 19th century ⓘ |
| field | electrical engineering ⓘ |
| field | optics ⓘ |
| field | telecommunications ⓘ |
| historicalSignificance | early example of optical wireless communication ⓘ |
| historicalSignificance | first device to achieve wireless voice communication via light ⓘ |
| inspired | later optical communication research ⓘ |
| instanceOf | invention ⓘ |
| instanceOf | optical communication device ⓘ |
| instanceOf | telecommunications device ⓘ |
| inventedBy | Alexander Graham Bell ⓘ |
| inventedBy | Charles Sumner Tainter ⓘ |
| inventionYear | 1880 ⓘ |
| inventorAffiliation | Bell Telephone Company ⓘ |
| inventorAffiliation | Volta Laboratory ⓘ |
| limitation | requirement for line-of-sight ⓘ |
| limitation | sensitivity to atmospheric disturbances ⓘ |
| limitation | sensitivity to weather conditions ⓘ |
| modulatorType | thin reflective diaphragm ⓘ |
| modulatorType | vibrating mirror ⓘ |
| operatingRange | several hundred meters ⓘ |
| outputConversion | electrical signal to sound ⓘ |
| outputConversion | light to electrical signal ⓘ |
| patentFiledBy | Alexander Graham Bell ⓘ |
| patentFiledBy | Charles Sumner Tainter NERFINISHED ⓘ |
| patentFiledIn |
United States of America
ⓘ
surface form:
United States
|
| patentFiledYear | 1880 ⓘ |
| powerSource | artificial light ⓘ |
| powerSource | sunlight ⓘ |
| precursorTo | fiber-optic communication ⓘ |
| precursorTo | optical telecommunication systems ⓘ |
| receiverMaterial | selenium ⓘ |
| receiverType | photoelectric cell ⓘ |
| receiverType | selenium cell ⓘ |
| relatedTo | fiber-optic cable ⓘ |
| relatedTo | free-space optical communication ⓘ |
| relatedTo | telephone ⓘ |
| signalCarrier | visible light ⓘ |
| transmissionType | wireless ⓘ |
| transmits | sound ⓘ |
| transmits | voice ⓘ |
| usesMedium | light beam ⓘ |