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9h 35min, jan 24, 1950 y - Grey Walter's Elsie

Description:

A neurophysiologist, Walter built wheeled automatons in order to experiment with goal-seeking behavior. His best known robot, Elsie, used photoelectric cells to seek moderate light while avoiding both strong light and darkness—which made it peculiarly attracted to women’s stockings.

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9h 35min, jan 24, 1950 y
Now
~ 75 years ago