What are "Kent windows"? What are these small round windows in a ship's wheelhouse used for?

The slowest aircraft in the world, F1D, has a thin layer of material, but can fly in the sky for 40

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finger repeater

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These inventions are too "criminal", I really don't poke

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The incredible diving bell boat allows people to walk underwater without getting their shoes wet. Do

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Why can silver cut ice in seconds? Put a silver bracelet on it and a magical phenomenon will happen.

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Today's stress-relieving video: an awesome mechanical series~

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The world's roundest ball took five years and cost tens of millions to create! What's it used for?

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[Popular Science] You think it's disgusting, but doctors love to do it. The reverse operation is act

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What is a "fair cup"? Pour the wine into a full cup, and embarrassing things happen

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An age-old mystery that has baffled scientists: Why can't spaghetti be folded in two?

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"I am a petty person. When faced with a big question, I dare not answer it easily. However, if my lo

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Incredible "boiling sand". Pour potatoes into hot sand and interesting phenomena will happen!

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How can an anchor stop a massive ship? How long is the anchor chain? Animation explains the principl

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Weird Habits

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Incredible "cotton ice cubes" are as strong as reinforced concrete! Can they be used to build aircra

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What is a "water bridge"? When direct current is passed through two adjacent cups of water, an inter

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

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[Final Episode] A Few Numbers, A Life (Tearjerker)

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Ice skates are so sharp—could they possibly cut the athletes? Turns out, Winter Olympics uniforms in

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Why is worker protection important when painting containers? #Science #Unzip #SprayPaint #Workers #C

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