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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