photophone

[ˈfəʊtəfəʊn]

photophone Definition

• 1. an early device for transmitting sound by means of light rays, used before the development of radio
• 2. a device that converts sound waves into light waves, used in fiber-optic communications

Using photophone: Examples

Take a moment to familiarize yourself with how "photophone" can be used in various situations through the following examples!

• Example

  The photophone was invented by Alexander Graham Bell and his assistant Charles Sumner Tainter in 1880.

• Example

  Fiber-optic communication systems use photophones to transmit data over long distances.

Phrases with photophone

• wireless photophone

  a photophone that uses wireless transmission of light to transmit sound

  Example

  The wireless photophone was an early precursor to modern wireless communication technologies.

• optical telephone

  a photophone that uses modulated light beams to transmit sound

  Example

  The optical telephone was an early form of photophone developed by Alexander Graham Bell.

• infrared photophone

  a photophone that uses infrared light to transmit sound

  Example

  Infrared photophones are commonly used in remote control devices and other short-range communication applications.

Origins of photophone

from Greek 'phos' meaning 'light' and 'phone' meaning 'sound'

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Summary: photophone in Brief

A 'photophone' [ˈfəʊtəfəʊn] is a device that converts sound waves into light waves, used in early forms of communication and in modern fiber-optic communication systems. It was invented by Alexander Graham Bell and Charles Sumner Tainter in 1880. Photophones can be wireless or use modulated light beams or infrared light to transmit sound.