Old phones snip

Phone History

By 172610

  • First Phone

    First Phone
    Before the invention of electromagnetic telephones, mechanical acoustic devices existed for transmitting speech and music over a distance greater than that of normal direct speech.
    [https://en.wikipedia.org/wiki/History_of_the_telephone]

  • Electrochemical Telegraph

    Electrochemical Telegraph
    The telephone emerged from the making and successive improvements of the electrical telegraph. In 1804, Spanish polymath and scientist Francisco Salva Campillo constructed an electrochemical telegraph. The first working telegraph was built by the English inventor Francis Ronalds in 1816 and used static electricity.
    https://en.wikipedia.org/wiki/History_of_the_telephone

  • Philipp Reis constructs the first speech-transmitting telephone

    Philipp Reis constructs the first speech-transmitting telephone
    In 1860, he constructed the first prototype of a telephone, which could cover a distance of 100 meters.://en.wikipedia.org/wiki/History_of_the_telephone

  • Speech transmitted by telephone

    Speech transmitted by telephone
    He designed a device to transmit speech vibrations electrically between two receivers and in June 1875 tested his invention. No intelligible words were transmitted, but sounds resembling human speech were heard at the receiving end.
    http://www.history.com/this-day-in-history/speech-transmitted-by-telephone

  • Carbon Microphone

    Carbon Microphone
    In 1877 and 1878, Edison invented and developed the carbon microphone used in all telephones along with the Bell receiver until the 1980s.
    https://en.wikipedia.org/wiki/History_of_the_telephone

  • First Transcontinental Telephone call

    First Transcontinental Telephone call
    A telephone call, which for marketing purposes is claimed to be the first transcontinental telephone call, occurred on Jan. 25, 1915, a day timed to coincide with the Panama–Pacific International Exposition celebrations.
    https://en.wikipedia.org/wiki/First_transcontinental_telephone_call

  • Hexagonal Cell Transmissions

    Hexagonal Cell Transmissions
    In December 1947, Bell Labs engineers Douglas H. Ring and W. Rae Young proposed hexagonal cell transmissions for mobile phones.

  • Rotary-Dial Telephone

    Rotary-Dial Telephone
    From the 1960s onward, the rotary dial was gradually supplanted by dual-tone multi-frequency push-button dialing, first introduced to the public at the 1962 World's Fair under the trade name "Touch-Tone". Touch-tone technology primarily used a keypad in form of a rectangular array of push-buttons for dialing.
    https://en.wikipedia.org/wiki/Rotary_dial