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Ever wondered why gold is yellow? The answer is Einstein’s Special Relativity.
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Ever wondered why gold is yellow? The answer is Einstein’s Special Relativity.
In Gold (Atomic Number 79), the nucleus is so massive & packed with protons that the inner electrons have to orbit at incredible speeds (~58% the speed of light) just to avoid crashing into the
时政
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twitter.com)
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Parimal
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After school, parents fetch their kids in China. Only difference is, they carry a long stick for Defence.
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After school, parents fetch their kids in China. Only difference is, they carry a long stick for Defence.
Less safe countries often doesn’t have this practice and the real questions is: what they are defending from?
Daily life in the so called safest country. Maybe someone
时政
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twitter.com)
00:00:11