The amount of work you've put in to get here depends on the path. It's not a function of state.
这些量就能,决定系统的状态了。
So I put the electron configurations and actually drew it on an energy diagram here, so we can actually think about why this might be happening.
所以我写出了它们的电子排布,并画成了能级图的形式,这样我们就可以好好想一想,这个问题发生的原因。
Cp, I forgot to put my little bar on top here because it's per mole Cp dT that's my dq here.
上面的Cv我忘记加上横线了,因为它也是摩尔热容。
So a serious thing, a lot of people get put off by notation, it looks scarier than it is, there's nothing going on here except for notation at this point.
很多人面对符号往往都望而却步,看起来它比这个更可怕,而在这里,其实仅仅是符号而已
So, as I put it, in fact I think I put it this way on the syllabus, participation--and here I mean respectful participation, not hogging the limelight... participation can improve your grade, but it won't lower your grade.
所以,像我这么陈述的,事实上,我想我用这种方式在课程表上,参与,在这里我是指尊重的参与,而不是想出风头的那种。,参与能够加分,而不会使你的分数变少。
Imagine I have a little lamp, a little goose- one of those little gooseneck lamps, I'd put it on the table here, I'd put the height about a f-- about a foot off the table. And if I was really good, - I could hit, or time it so that when I hurt- yeah, try again. When I turn this on switch on in the lamp, at exactly the same time, I'm going to hit a key on my computer and start it running.
想象下我有一个那种小雁颈台灯-,我把它放在桌子上,大概离桌子,有一英尺那么高吧,这样挺好的,我可以打开-,或者关闭这灯,并在这同时,我可以让我电脑,开始运行。
We should call it E-flat and put it up on the E line because there's kind of rule here that you have to use up each letter name in turn, each letter name in turn.
我们应该称之为降E,把它放在E的谱线上,因为这算是一个规则,要依次使用每个字母,依次用每个字母
We're going to take a chromosomal DNA, we're going to digest it with this restriction enzyme, we're going to put it in this tube and run it on a gel, and we're going to see what results down here.
我们取一条染色体DNA,然后用限制酶进行分解,接着再放,在凝胶上进行电泳,之后看看结果如何
Now that definition, if you're worried about what I've written down here and you want to see it in words, on the handout I've already put on the web that has the summary of the first class, I included this definition in words as well.
对于这个定义,如果你还有些疑问,而且你想看用文字表述的,在讲义中有,我已经上传到网上了,里面有第一节课的总结,也这个定义的文字形式
So expansion work, for instance, or compression work, is if you have a piston with a gas in it. All right, you put a pressure on this piston here, and you compress the gas down. This is compression work.
力乘以距离,就是功,功有许多种:,电可以做功,驱动电机与电风扇,磁力也可以做功。
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