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S6:E20 Retroreflectors; they're everywhere, and they cheat physics (sort of)
First Aired: August 31, 2020
Runtime: 23 min
Road signage and other markings may be something you take for granted, but have you ever wondered how they can appear so brightly with just the output of your headlights? Find out how, and get a load of other trivia, in this video!
