Exam (elaborations)
TFM #1 Exam with Verified Solutions
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A precursor to both TV and the radio, first discovered in 1895 - The Wireless A rotating disc placed between a scene and a light-sensitive selenium element. It was seen as a way to transmit pictures by wire dots. - Nipkow Disc Lee de Forest patented his invention of the Audion Tube in 1908....
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