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Period: to
radio waves
Heinrich Hertz detects/produces radio waves. http://www.wcbn.org/history/wcbntime.html -
a spark
nikola tesla transmitted the first wirelessly electromagnetic
energy
https://lynn-library.libguides.com/c.php?g=591810&p=4092057 -
RADIO
Guglielmo Marconi established the Wireless Telegraph and Signal Company in 1897.
https://lynn-library.libguides.com/c.php?g=591810&p=4092057 -
USA
radio introduced to the U.S. via a Scientific American article on “How to Construct an Efficient Wireless Telegraphy Apparatus at Small Cost.”
https://lynn-library.libguides.com/c.php?g=591810&p=4092057 -
publicity
Radio communications gain publicity when the captain of the Montrose alerts Scotland via radio of an escaping criminal. -
networks
The first permanent national network, NBC, was formed for radio. -
electronic age
texas instruments makes the first commercial transistor radio, launching us into the electronic age.