A cesium atom in an atomic clock beats over nine billion times a second.
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When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
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A single speck of dust is half way in size between a subatomic particle and the Earth.
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The average temperature at 40,000 feet above sea level is -60 F.
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Most dust particles in your house are made from dead skin!
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MIT has developed a camera that captures the speed of light at a trillion frames per second.
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Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
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