Which major 20th-century technology was envisioned by a young Philo Farnsworth while working on an Idaho farm?
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As a teenager in Rigby, Idaho, Philo Farnsworth realized that an electron beam could scan images line by line, much like a plow tilling a field in parallel rows. He sketched this revolutionary idea for his high school chemistry teacher, a drawing that later proved crucial in winning his patent disputes against RCA. Photo: Harris & Ewing, Wikimedia Commons, Public domain.
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Source: Wikipedia (CC BY-SA)
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