The incredible Buffon needle throw: throwing a needle randomly on paper can actually calculate "π"!

How Powerful Is a Volcanic Eruption? If Yellowstone in the U.S. Ever Blows, It Could Wipe Out the En

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Build Most Amazing Simple Underground Temple Living of the King

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[Friesian horse] Running videos mix

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Principle of the Three-Stage Reducer

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How a vibrator works

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[Thai Sand Sculpture Advertising] I want to get rich overnight, what should I do...

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What would Vikings do if they suspected their wives of cheating?

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centaurs, centaurs

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The bandages are too big; just use contact lenses!

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Does 100% pure water exist? Why does Japan store 50,000 tons of ultrapure water 1,000 meters undergr

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The sand in the desert stretches endlessly—why not use it to build houses? Let's hear the scientific

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The incredible "curved and straight" model, the rotating and tilted red straight rod, an interesting

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Heavy rain is coming—can we use "artificial rain dissipation"? 1,104 shells once ensured the Bird's

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What is "fighting fire with fire"? Why does adding fuel to the fire actually help extinguish the Cho

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How are Nixie tubes made? Why haven't the once-popular counting bulbs disappeared?

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What is the "coin paradox"? It appeared on the US college entrance exam, and only 3 out of 300,000 p

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How dangerous is it really to reach the summit of Mount Everest? Why does Everest have two "heights"

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The incredible "pumice" can float on the sea for 20 years. Do you know the principle?

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How Is Oil Formed? How Much Oil Is Left on Earth? The Truth Behind the “Peak Oil” Debate

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What is the water hammer effect? When the valve of a water pipe is suddenly closed, an interesting s

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