Incredible "Ball Clock"! Use a small ball to tell time. Do you know the principle?

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? What is the principle?

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Does the texture of cantaloupe have anything to do with whether it is sweet or not?

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What is a "Koch snowflake"? Why does it have a finite area but an infinite circumference?

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The incredible "artificial stone splitting method" uses a hammer to hit the steel nail, and an inter

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The weird "Ames illusion"! Push the window and turn it, and an incredible phenomenon will happen

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The weird "Ames illusion"! Push the window and turn it, and an incredible phenomenon will happen

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What is "cushion paper"? Gently pull out the honeycomb grid, which could replace plastic packaging!

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Why do we add glass slag to metal when smelting it? Learn more!

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Why do we add glass slag to metal when smelting it? Learn more!

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Although I don’t know the principle, I can imitate it!

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Although I don’t know the principle, I can imitate it!

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An incredible scientific phenomenon: two circles have different diameters, but why do they roll the

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Why do we need to apply "glue" to handball, a sport with extremely high viscosity?

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Why do we need to apply "glue" to handball, a sport with extremely high viscosity?

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Why do cold water and hot water mix and become incompatible? Do you know the principle?

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Why do cold water and hot water mix and become incompatible? Do you know the principle?

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