History of Radio and TV

By hannah.crim

  • James Maxwell

    James Maxwell
    showed electromagnetic waves could propagate through free space

  • Guglielmo Marconi

    Guglielmo Marconi
    built the first complete, commercially successful wireless telegraphy system based on airborne Hertzian waves (radio transmission)

  • Roberto Landell de Moura

    Roberto Landell de Moura
    Transmitted first human voice wirelessly at a distance of about half a mile

  • First Radio Broadcast

    First Radio Broadcast
    Station 8MK was the first radio broadcaster and is still around today as WWJ under ownership of CBS

  • AT&T Commercialized the Mobile Telephone Service

    AT&T Commercialized the Mobile Telephone Service
    AT&T introduced Mobile Telephone Service to one hundred towns and highway corridors by 1948

  • Sony

    Sony
    Introduced transistorized radio that was small enough to fit in a vest pocket powered by a small battery.

  • First colored TV

    First colored TV
    Colored television was being broadcast commercially

  • U.S. Navy

    U.S. Navy
    The U.S. Navy experimented with satellite navigation, culminating in the launch of the GPS

  • Carl Malamud

    Carl Malamud
    Launched the Internet Talk Radio which was the first computer-radio talk show each week

  • American Population Listening to Radio Increases

    American Population Listening to Radio Increases
    13% of the population listens to radio online, compared to 11% in 2007