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Fonctionnement d'une montre à quartz - son cœur bat 32 768 fois par seconde
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I Calculated Absolute Zero With Vodka
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Cube Reflectors on the Underground
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More Bizarre Attempts at Perpetual Motion Machines
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What Happens to Lasers Underwater? (Total internal reflection) - Smarter Every Day 219
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The Levitating Liquid Pendulum
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