ファイル:Marconi's first radio transmitter.jpg - Wikipedia
How Marconi Gave Us the Wireless World
Marconi Transmitted The First Radio Signal, But His Invention Is Not Uncontested - Zenger News
1936 Marconi Radio | Antique radio, Retro radios, Vintage radio
Guglielmo Marconi (April 25, 1874 - July 20 1937) was an Italian inventor, known as the father of long distance radio transmission and for his development of Marconi's law and a radio
Who Invented Radio: Guglielmo Marconi or Aleksandr Popov? - IEEE Spectrum
Guglielmo Marconi, Radio Inventor Poster by
File:Marconi crystal radio receiver.jpg - Wikimedia Commons