For, according to Dr Pyykko s calculations, relativity explains why tin batteries do not work,but lead ones do.
根据Pyykko博士的计算,相对论解释了为什么铅可以用来做电池,而锡不可以。
His chain of reasoning goes like this.
他一连串的理由是这样解释的。
Lead, being heavier than tin.
铅比锡重,核子里的质子数更多。
That means its nucleus has a stronger positive charge and that, in turn, means the electronsorbiting the nucleus are more attracted to it and travel faster, at roughly 60% of the speedof light, compared with 35% for the electrons orbiting a tin atom.
这表明原子核的正电更强,同理表明更容易吸引绕着原子核的电子,电子传播的速度也更快,其速度是光速的60%,相比之下,绕着锡原子的电子速度只能达到光速的35%。
As the one Einsteinian equation everybody can quote, E=mc2, predicts, the kinetic energyof this extra velocity makes lead s electrons more massive than tin sand heavy electronstend to fall in and circle the nucleus in more tightly bound orbitals.
人人都会引用的爱因斯坦相对论公式:E=mc2,公式表明这一额外速度即更高的能量产生的动能使得铅的电子比锡的更重不断增加的质量而重的电子往往会下落,围着结合更紧密的原子核轨道绕行。
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