radio history

By Isaiahwilliams369

  • the beginning

    Hendrick Hertz proved you could send electric waves wirelessly.

  • Guglielmo Marconi

    he invented an alarm that would go off when it sensed lightning bolts. he also had his first radio apparatus in 1886

  • Nikola Tesla

    She invented the Tesla coil that can transmit energy waves over a long distance.

  • first radio message

    the first radio message was sent from president Roosevelt to king Edward Vll in 1903

  • the sinking of titanic

    the sinking of titanic was broadcasted over the radio to get help in

  • in the 1920's

    in the 1920's radio was widely used for weather, the navy, and concerts or lectures

  • KDKA 1020

    this was the first radio station in the US and is still used today