So, you remember from last time radial nodes are values of r at which the wave function and wave function squared are zero, so the difference is now we're just talking about the angular part of the wave function.
你们记得上次说径向节点在,波函数和波函数的平方,等于零的r的处,现在的区别是我们讨论的是,角向波函数。
In fact, I'm going to use only two dimensions for most of the time because the difference between one dimension and two is very great.
实际上,大多数时候我只考虑二维的情况,因为一维和二维的差别很大
This was eventually taken out, and actually just for your interest, there was no overlap between the time when cocaine was in Coca Cola and lithium was in 7-Up, so there was a few years difference between those two times, but it's amazing to think about what does go into processed foods.
锂最终被去掉了,如果你感兴趣的话,可口可乐中含有可卡因,与七喜中含锂的时代,并没有交集,它们之间还差了几年,但是想一想加工食品里,会加入什么东西还是很令人吃惊的。
But if you look at the tech fund category, the difference between the dollar-weighted and the time-weighted returns--this is over a ten-year period -is 13.4% per annum; that's stunning.
但是如果你关注科技投资基金,十年间,货币加权回报率,和时间加权回报率间的差距,是每年13.4%,这是非常夸张的
But the difference is the time scale.
但是不同的是时间段。
The other thing that I mentioned last time was that there seems to be a really big difference between the expected return on the stock market and the expected return on short-term debt.
上节课提到的另一条内容是,股票市场的预期收益,与短期债券的预期收益,存在着巨大差异
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