This machinery is so precise that a human hair couldn't even pass between the heads and spinning platters, yet it all works in terrific speeds.
这些设备是很紧密的以至于人的头发,都不能在头和旋转的磁盘之间通过,尽管如此,它的运行速度非常快。
So, let me go had and let's swivel this around for just a moment so we have a blank slate and now what's really going on?
我把它旋转一下,这样就有一块空白了,到底发生了什么呢?
So another way to think about that is just the rotational kinetic energy of our electron.
或者,这样想,它是,电子旋转的动能。
It doesn't simply orbit the nucleus, but as it orbits it spins.
它并不只是简单地绕原子核旋转,而是同时进行公转和自旋。
You spin this big wheel and it rotates for a while and then it stops at one number, but obviously a random number, because this wheel of fortune had all the numbers from zero to one hundred.
你转动那个大轮盘,它会旋转一会儿,最后停在一个数字上,显然是一个随机数,因为幸运轮盘可以指向,0到100的的任何数
When we have just a single bond in them molecule, you have all the free rotation you want, you can just spin it around, there's nothing keeping it in place.
当我们在分子力只有一个单键时,你可以随意旋转,你可以让它转起来,没有什么东西能固定住它。
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