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Curated by: Kathy Loves Physics (123 videos)
What is the superheterodyne method and how did it usher in the era of broadcast radio? This is the story of Howard Armstrong who invented the superhet receiver in a WW1 bombing raid and David Sarnoff who fought his way from poverty to controlling an empire. Check it out! Also, if you want to see some amazing pictures of Armstrong and his history check out users.erols.com/oldradio Armstrong/WJZ photos from the Harry Houck Collection or Columbia University's Armstrong Collection Finally, as usual, the music is from the fabulous Kim Nalley