The only thing that's different is that they're one down on the periodic table, potassium is down one row, so it's going to be a little bigger, but when we're thinking about size, it maybe does not seem that significant to talk about the size.
它们唯一的不同点,就在于其中一个在周期表的下面,钾在下一行,因此它要稍微大一些,但是当我们考虑尺寸的时候,似乎讨论尺寸的意义不大。
And when we talk about size, I'm again just going to say the stipulation we're not talking about an absolute classical concept here, but in general we're going to picture it being much further away from the nucleus as we move up in terms of n.
当我们说到尺寸时,我们只是说――,经典的绝对的概念,而是它大约,离原子核有多远。
If I get you down to a cluster of about 30 water molecules, the boiling point is a function of the size of the water droplet.
如果对于一个由30个水分子,组成的簇,沸点是,水珠尺寸的函数。
So: the great civilizations of ancient Egypt, Mesopotamia and the area we refer to as the Fertile Crescent, of which a little part here about the size of Rhode Island is Canaan.
古埃及,美索不达米亚地区,我们称之为新月沃地,这里的这一小部分,跟罗德州岛差不多大的是迦南。
Usually what I want to talk about is what's the smallest size class in which this function grows? With all of that, what that says b is that this we would write is order b.
通常我们想要的是,方法增长时最贴切的描述,也就是说,在这个问题上,算法关于。
And to give you a size perspective, that is about the size of my pinky finger nail, 4 mm on the side.
这个芯片,有我的手指甲那么大,边长4毫米。
I think that's the real thing we should talk about, not the size of his penthouse.
我认为这才是我们需要谈论的,而不是他的顶层套房有多大
Now Attica is, in fact, approximately 1,000 square miles, which I am told is about the size of Rhode Island, and that's the biggest polis of which we know.
阿提卡,事实上,大约一千平方英里,我听说大概和罗德岛差不多大,而这就是我们所知的最大的城邦
For example, a portion of pasta according to the U.S. Department of Agriculture would be about the amount of pasta that would be the size of a tennis ball.
比如说,意大利面的每日摄入量,根据美国农业部,是如此的份量,大概和网球一样大小
And how about if the array is size N, and I say bracket N, where am I referring?
如果那个数组的大小为N,那会怎么样,我指明,涉及到了那个地方?
If we think about the size of a typical cell - excuse me, now I'm getting confused about nuclei.
它大约是10的,负十四次方米,如果我们考虑。
These are all isoelectronic, they all have the same electron configuration. And we can also think about going back to atomic size for a second.
这些都是等电子的,它们都有相同的电子排布,而,我们还可以再回想一下原子尺寸的概念。
What we really want to worry about is, as the size of the problem gets larger, how does this thing grow? How does the cost go up?
随着问题规模的变大,解决问题花费的代价是怎么增长的,因此我们将会主要地讲讲?
For some of you that haven't I'll just say that it's a protein, it's 238 amino acids, which means that it's about 1,000, actually more than 1,000 atoms in size, and this protein is fluorescent.
对于那些没听说过的人,我要说它是一种蛋白质,它有238个氨基酸,也就意味着它有约1000个,实际上是超过1000个原子,这种蛋白质是有萤光的。
Size dependent behavior: that's what nanotechnology is about, isn't it?
尺度依赖的行为:,这就是纳米技术研究的,不是吗?
And if we're talking about atomic radius, essentially we're talking about atomic size.
如果我们在讨论原子半径,实际上我们讨论的是原子的尺寸。
If we think of the size of a typical atom, we would say that would be about 10 to the negative 10 meters. So, we can see the diameter of a nucleus is absolutely smaller really concentrating that mass into a very small space.
一个普通细胞的大小,抱歉,我和细胞核搞混了0,如果我们考虑,一个普通原子的大小,这大概是10的负十次方米,所以原子核的直径确实非常小,真的是把质量。
So when we talk about the size of multi-electron orbitals, they're actually going to be smaller because they're being pulled in closer to the nucleus because of that stronger attraction because of the higher charge of the nucleus in a multi-electron atom compared to a hydrogen atom.
所以当我们讨论,多电子轨道的尺寸,它们实际上会变得更小,因为多电子原子的原子核,相比于氢原子,有更高的电荷量所以,有更强的吸引力,所以可以拉的更近。
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