Let's say you go home for Thanksgiving break and your grandmother says, "What have you been doing at Yale?"
如果你感恩节假期回家 你奶奶问你,你在耶鲁都学了点什么“
If you go to Denmark and you break a $100 bill, you're going to be given one of these, undoubtedly, the 500 kroner note, which is worth about $75-80, and it has Niels Bohr on it.
如果你去了丹麦,换了100美元,毫无疑问,你会得到其中一个像这样的,500挪威币,约为75-80美元,上面有波尔的头像。
Is this possible? That's what the first law says it's possible; work is heat, and heat is work, and they're the same thing. You can break even 100% maybe. So let's go back and see what work is.
00%的效率,我们可以从大气中吸收热量,用来驱动我们的汽车,效率也应该能达到。
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