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And if the test is true, it will change the value of this program counter to point to some other place in the memory, some other point in that sequence of instructions, and you'll keep processing.
如果测试结果为真，它会改变程序计数器的结果去,指向记忆存储器里的其他地方，指令序列里的其他地方，然后你会继续这个过程。
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But, he built a scintillation screen, which is essentially a cloth fiber that was covered with zinc sulfide.
他做的闪烁计数器，本质上是在纤维布上,覆盖硫化锌。
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And I mentioned on Wednesday that computer scientists do 1 in fact start counting from zero not one.
在星期三，我曾经提到过计算机专家,从0开始计数而不是。
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That program counter points to some location in memory typically to the first instruction in the sequence.
程序计数器指示存储器当中的某些位置,尤其是指示序列中的第一个指令。
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If he switched from gold to let's say iron, he also tried platinum, a number of different foils, he found that they count rate it still was 20 alpha particles per minute.
金箔的时候，计数率就变成零了,如果他把金换成比如说铁，他们还尝试了铂,还有一系列其他的箔片，他发现计数率还是每分钟。
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Homer and Virgil and, well after them, Dante and innumerable others have all applied the simile of the leaves or some version of it to describe the numberless-ness of the dead.
荷马，维吉尔，在他们之后还有但丁,以及无法计数的曾经用过这个落叶比喻,或者变种版本来形容死者的数量极多的其他诗人们。
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You don't have to count all the leaves on the tree, you can take a sample and you count that and then you multiply.
你不必数树上所有的叶子,你可以抽样,然后计数,再相乘即可
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There's no Geiger counter to tell you number 3 is nearby or someting, right?
没有盖革计数器来告诉你,数字3就在你附近，对吗？
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It didn't really crash, it found an assert statement. So if you look at the bottom of the function, you'll see that, in fact, I checked for that.
其实程序并没崩溃,它只是碰到一个断言语句然后停了下来,如果你看看函数的顶部，你会看到，实际上我断定计数器。
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I am only counting in one direction, 2 so I have to multiply this whole thing by two because I have to count both directions.
因为我只是在一个方向上计数，所以我要把这些所有乘以,因为我们必须考虑到2个方向。
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Having executed this instruction, that counter goes up by one and we move to the next one.
执行过这个指令之后，计数器升了一级,于是我们开始下一次的运算。
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It's how you can initialize a variable to like zero for counting's sake or something like that.
你可以初始化一个变量，像0用来,计数的或者诸如此类的。
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You get graduate students cheap labor or some other form ofcheap labor and he had them sit in front of the scintillation screen and they count.
如果你成为研究生,或者其他形式的廉价劳动力,他们必须得坐在,闪烁器前面，不停的计数。
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What I meant - what in the world do I mean by that?
是选一个计数的变量,我这么说是什么意思呢？
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He ultimately invented the Geiger counter that bears his name.
最终他发明了一种计数器,是以他的名字命名的。
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> David: Yeah, it's going to count from zero 100 up to one hundred percent.
>，大卫：是的，它将从0开始,计数到。
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And, of course, all that's left is this positive pudding. So that's not going to do anything either. And what he found when he did this experiment, was that the count rate with still 132 000 counts per minute.
剩下的是带正电的布丁,也不会产生什么影响,结果他实验上观测到,计数器测得每分钟132000下,所以到目前为止,他可以说实验。
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> It's going to count from zero.
>，它将从1开始计数到【听不见的】
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It's called the scintillation screen.
叫做闪烁计数器。
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One other piece that goes into this computer John I never remember where to put the PC, John, control? ALU? Separate? I'll put it separate you have a thing called a program counter.
另外可以进入这台计算机的是,我老是记不住在哪儿放电脑，控制？ALU？分开？我会把它分开放,你们有一个叫做程序计数器的东西。
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So when we count, generally, again, we start from zero, we go to N minus 1.
当我们计数时，一般的，再次强调，我们从0开始，到N-1结束。
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And obviously, that ought to involve the variable in some way, or it's not going to make a lot of sense, so this includes the variable, since that's the thing that's changing.
很明显，这跟计数器的变量有某种关系,否则的话就没多大意义了,因此这跟计数器有关，因为它正是每次循环改变的东西。
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And I need to make sure I have a command that sets that up.
我想从哪儿开始呢？,我必须确认有个设置计数的命令。
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And remind you that inside of here, I'd better be changing the variable. All right, if that variable that's counting is not changing I'm going to be stuck in an infinite loop, so I ought to that, right, expect somewhere in there, a change of that variable. All right?
我最好改变了计数器的变量值，好，如果计数的变量没有变化的话，我就会被卡在一个无限循环里面,因此我应该【不可闻的声音】,对，在这里的某个地方，改变下计数器的变量，对不对？我要做的最后一件事情就是？
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I'm checking that I didn't leave my program because I didn't find an answer. Well this is a good thing, it's better than my program running forever, but it's a bad thing because I don't have it the square root of 0.25.
我对计数器要做个验证,因为我不会没得到答案就退出程序,好，这其实是个好事,因为它不会让我的程序永远跑下去，但这也是件坏事因为,我没得到0。25的平方根。
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So I'm going to check to see if- really can't read that thing, let me do it this way-- right, I'm going to increase the number of compares, and I'm going to check to say, is the thing I'm looking for at the i'th spot in the list?
让我们这样做吧-好-,我会去增加比较次数的计数器,然后去看看在第i处的元素,是不是我要找的呢？,这里s的意思就是,给定数组的？
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Now I'm putting count in double quotes, not to make it a string, but to say, this is count generically. It could be counting one by one through the integers, it could also be taking a collection of data and going through them one by one. It could be doing counting in some other mechanism.
现在我把count用双引号标起来，不是说把它命名为一个字符串，而是说，这是一个通用的计数器,它可能是每一次减1的整数,也可能是拿一个集合的数据然后,一个一个的访问它们,也可能是以某种机制来计数。
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By convention, it's Arg C, because it means argument count.
按照惯例，它叫ArgC，因为它的意思是参数计数。
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Right. N is over here for counting from zero.
对的，从0开始计数，N到了这边。
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PROFESSOR: Um-hmm, a Geiger counter.
教授：嗯，Geiger计数器。
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