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Shaken, Wound, and Rolled: 1970s Toy Mechanics
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When the Magna Doodle was invented in 1974, how did the magnetic stylus create drawings on the screen?
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⚖️
50-50
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Audience
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A
It pulled tiny magnetic particles suspended in a thick liquid to the front plastic sheet
B
It scraped away a layer of dark wax to reveal a bright background
C
It activated a grid of micro-LEDs powered by a watch battery
D
It aligned iron filings trapped between two sheets of dry paper
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