Radio History

• 600 BC. Pliny, properties of amber (in Imperial Rome) Greek root word for "electricity"
  
  
• 1603 Dr. William Gilbert electrum->amber->electrica
  
  
• Early 1800's, Faraday discovers relationship of electromagnetism to light
  
  
• 1873 James Clerk Maxwell, EM waves. Mathematical proof of Faraday's concepts
  
  
• 1885 Dr. Mahlon Loomis, galvenometer deflects at 18 miles distance
  
  
• 1886 Heinrich Hertz, spark across a loop at a distance (~50 MHz?)
  
  
• 1894 Guglielmo Marconi, adapted Hertzian oscillator and 'decoherer' to send a signal over 2 miles, Salisbury Plain, England.
  
  
• 1899 Scientific American Magazine impartially discussed Marconi's results
  American Electrician Magazine gives construction details.
  Considerable amateur interest.
  
  
• 1901 Using tuned circuits in both transmit and receive, Marconi spans Atlantic with "Wireless". Press and experimenters go wild!