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So if you popped open the blueberry and were searching for the nucleus 如果你在蓝莓的内部搜索原子核，结果是一无所获。 You know what? It would be invisible. It's too small to see! 知道为什么吗？因为我们看不到它！它

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take these shoes click clacking down some dead end street and make them fit take this shirt polyester white trash made in nowhere and make it clean, clean take this soul stranded in some skin and bone

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The human body replaces 98 percent of its atoms yearly, but the makeover prompts wider questions. From NPR news, this is All Things Considered. I am Debbie Elliott. Time now for our look at some of the elemental questions of life in our segment Scie

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The mayor of the Japanese city of Nagasaki has taken time to criticize the Japanese government's refusal to sign a non-proliferation treaty earlier this year. Tomihisa Taue made has blasted the government during the ceremony to mark the atomic bombin

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You, today, buy gasoline miles. And we created electric miles. 现在大家买的是汽油里程。我们就创造电子里程。 And the price of electric miles ends up being a very interesting number. 电子里程价钱加起来是个有趣的数字。

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But this still doesn't explain why light is able to pass through glass rather than being absorbed as with most solids. 但是这还是不能解释为什么光可以穿透玻璃而不是像其他大多固体那样被吸收。 For that, we need to go a

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It was while puzzling over this problem that Bohr was struck by a solution and dashed off his famous paper. Called On the Constitutions of Atoms and Molecules, the paper explained how electrons could keep from falling into the nucleus by suggesting t

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Let us pause for a moment and consider the structure of the atom as we know it now. Every atom is made from three kinds of elementary particles: protons, which have a positive electrical charge; electrons, which have a negative electrical charge; and