What is an "oxygen candle"? Do you know how burning can actually produce oxygen?

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

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What is hot ice? Do you know how your palm freezes quickly when you put it in liquid?

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The world’s Guangji Bridge is the earliest bascule bridge in history.

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Where’s the safest seat on an airplane?

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How to make an emergency landing if the aircraft tire fails?

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☝色情电影布景师

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[Finished Footage | Educational Film] "The Production Process of Celluloid Animation" Fleischer Stud

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What is "metal fatigue"? Why can tiny cracks trigger catastrophic accidents?

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Why can an anchor stop a hundred-ton giant ship? How long is the anchor chain? An animated explanati

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The most hardcore processing method is "cold drawing", where a round tube goes in and a square tube

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Incredible "sound-induced light", the bubble burst temperature is as high as 20,000℃, which is 4 tim

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The incredible ulexite is opaque but can project objects onto its surface. Do you know the principle

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A clever way to repair pipes: stuff hoses into waste pipes and they can be used for another 50 years

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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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The ancient navigational tool "Sextant" is still in use today! Do you know how it works?

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The secret of the square wheel's forward motion: the catenary, which mathematicians have studied for

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Does hot water freeze faster than cold water? This seemingly simple question has sparked debate amon

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What is "wire cutting"? The machining accuracy of a molybdenum wire can reach 0.001mm. Do you know t

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How does a microwave oven heat something? Why can't you put metal in a microwave?

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What is Enhanced Geothermal System? China's reserves could last 4,000 years and may reshape the glob

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