It's Huxley that said woe to the slaying of a beautiful theory by an ugly fact, nuclear collapse.
赫胥黎说过,一个美丽的理论,被丑陋的事实所抹杀,核坍塌,真是科学的悲剧。
Four times the number of pigs plus two times the number of chickens, assuming they're not next to a nuclear reactor, is 56.
其它还有什么呢?,4倍的猪的数量加上两倍的鸡的数量,考虑到它们不是住在核反应堆旁的。
We have theories--mathematical theories-- that lead us to devise financial structures, which are complicated devices just like engines or nuclear reactors.
金融学中的理论,数学理论,能帮助我们构造金融工具,金融工具就像发动机,或者核反应堆一样,都是复杂的工具
And let's say our second electron now is really far away, such that it's actually not going to shield any of the nuclear charge at all from that first electron.
距离原子核非常非常近,我们说第二个电子处于非常远的位置,这样它不会对第一个电子,感受到的来自原子核的电荷量有任何屏蔽作用,我们最后要说的是。
It is about 10,000 to one, the ratio 10000 of the nuclear dimension to the entire atomic dimension.
原子核和整个原子的大小比例,约为1:
But, at the mean time, of cource, we've seen nuclear proliferation in North Korea and now in Iran.
但是,同时,我们目睹了朝鲜的核扩散问题,现在伊朗也存在同样的问题。
But we usually mean by it the immediate, the nuclear family, with some extension.
但通常都是指直系亲属,核心家庭,少量分支。
Even if a nuclear explosion took place and everything on earth got atomized and destroyed, through some bizzare science fiction chain reaction. They always do in the movies.
即使发生核爆炸,像某些离奇科幻小说里描述的,的连锁反应那样,一切都毁灭了,电影里经常可以看到的场面。
It turns out, and we're going to get the idea of shielding, so it's not going to actually +18 feel that full plus 18, but it'll feel a whole lot more than it will just feel in terms of a hydrogen atom where we only have a nuclear charge of one.
结果是我们会有,屏蔽的想法,所以它不会是完整的,但是它会比原子核电荷量,吸引力要大很多,只有1的氢原子的。
Isotopes have the same chemical identity but different nuclear properties.
同位素有相同的化学特性,但是原子属性不同。
And the real killer is if we get too close we're even going to have nuclear-nuclear repulsion between the nuclei of the two atoms.
而更致命的是,如果我们靠得太近,我们甚至会有,两个原子核之间的排斥力。
One thing I'd like to stress is that the history of technology is sometimes a history of very glamorous, unobvious ideas like nuclear power.
我想强调的一件事是,技术发展史有时是一种,令人着迷的潜藏的智慧发展史,就像核动力一样。
If we think about that, that's a sigma bond, right, they're coming together along the nuclear axis.
如果我们考虑它的话,它是sigma键,对吧,它们沿着核轴方向靠近。
there are terrorism that works, there are nuclear proliferation as I said.
恐怖主义仍在继续,还有我刚才说过的核扩散问题。
There are fewer electrons around to s hield some of that nuclear charge.
即周围屏蔽原子核电量的,电子更少。
So, that's their first objection, nuclear collapse.
这是他们的第一条反对意见,核坍塌。
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