Skip to content

Bills World

KN4LUZ

  • Home
  • SBVP
  • Capt. Bill
  • SPARC Pics
  • BW Pics
  • SPARC Trivia
  • Suncoast AT

13 November 19

LED or Light Emitting Diode also known as Electroluminescence was discovered by
A. H. J. Round
B. Carl Accardo
C. Madame Marie Curie
D. Georges Destriau
Answer is A… H.J. Round a British Experimenter of the Marconi Labs in 1907 using a crystal of silicon carbide and a cat’s-whisker detector.

More at Wikipedia

Share this:

  • Click to share on Twitter (Opens in new window)
  • Click to share on Facebook (Opens in new window)

Related

Author Bill_LPosted on 13 November, 2019Categories 2019 SPARC Trivia, SPARC TriviaTags rest of the story, sparc, sparc trivia, the rest of the story

Post navigation

Previous Previous post: 12 November 19
Next Next post: 14 November 19

Recent Posts

  • January 22
  • November 21
  • October 21
  • September 21
  • August 21

Categories

  • 2018 SPARC Trivia
  • 2019 SPARC Trivia
  • 2020 SPARC Trivia
  • 2021 SPARC Trivia
  • KO4CR QST
  • SPARC Pics 2021
  • SPARC Pics 2022
  • SPARC Trivia

Links

  • SPARC
  • NZ1Q
  • ARRL
  • QRZ
  • USA Coach

Downloads

  • Bob Nagy - AB5N - The Ubix Overview (673 downloads)
  • Dell's 58 Buick (210 downloads)
  • Field Day 22-23 June 19 (644 downloads)
  • Field Day June 2021 (226 downloads)
  • January 2019 Field Day (3623 downloads)
  • Kenwood TS 570D (2819 downloads)
  • KG-Clip Number 4 (124 downloads)
  • NY4I Tower Party (610 downloads)
  • Storm 11 Nov 20 (285 downloads)
  • Winter Field Day 2020 (489 downloads)
  • Home
  • SBVP
  • Capt. Bill
  • SPARC Pics
  • BW Pics
  • SPARC Trivia
  • Suncoast AT
Bills World Proudly powered by WordPress