Why are electric bike wheels so small, while bicycle wheels are so big?

[Sports]Mountain bike extreme sports show

2.5K Views

What is a couple force, and can you win a tug-of-war just by lying down?

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Car Disassembly Video

46 Views

Use inertia to remove parts. #PopularScience #Unzip #Inertia #SlidingHammer

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Hot Wheels

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A man riding a bicycle did not look up at the road and two bicycles collided accidentally.

32 Views

cave car

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How are the patterns painted on ceramics? #Science #StressRelief #Pottery #LearnSomethingNew

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Why do we add a layer of metal between the hammer head and the wooden handle? #Science #StressRelief

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"Creative Bicycle" – Recommended Only for Fun-Loving People

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I heard that people who walk with their feet turned inside out are cuter.

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Why doesn't it hurt when a needle is stuck in my finger?

56 Views

Yowamushi Pedal 42: A bicycle can beat a motorcycle at a speed of 80 mph. Is this really possible?

280 Views

The power of science

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Far more than the average family car? A palm-sized inline four! The whole process of assembly!

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Let Dianmo be terrified! 3x acceleration, look at silly cars

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The Traps and Solutions of Body Language

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This silly advertisement made me laugh my head off hahahaha

356 Views

Why is the blade of a gantry shear angled? #Science #StressRelief #HeavyMachinery #GantryShear #FunF

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The wisdom of the working people is to change the direction of force to move heavy objects. #Science

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