"It's an astonishing feat to get six predictions in a row. I am told people are walking into our shops and saying 'I will have what the Octopus predicted.'" But before taking Paul's word for this World Cup, it might be worth checking out the competition, because Paul isn't the only animal making predictions on this World Cup.
VOA: standard.2010.07.09
So I've sort of just spread out what we have as the second row here, graphed against the ionization energy.
所以我将第二行的情况,在这里展了,纵坐标是电离能。
As we go across the row what happens is that the ionization energy actually increases, and we can think about logically why it is that that's happening.
当我们沿着行,向右走的时候,可以发现电离能是逐渐升高的,我们可以从逻辑上思考一下为什么会这样。
There's one more piece that we'd like to get out of that, and that is-- you may have been wondering, what's with the funky stuttering here of three double-quotes in a row. All right? And that is a specification.
但是你没有屏蔽这个函数的使用细节,在这里我们还想再讲一讲,那就是--你可能正在想,这里连续3个奇怪双引号,是干什么用的。
Next, if you're going to sleep, I ask you to sit between two non-sleepers because sometimes what happens, the whole row will topple over.
另外,如果你要睡觉的话,请坐在两个不睡觉的同学中间,因为有时候,整排的人都倒下了
Everyone understand in this row what we're doing?
这行的人都明白我们在干什么吗
And we know as we go across a row in the periodic table, what's happening is that z effective or the effective pull on the nucleus is increasing.
而我们知道沿着周期表的某一行向右看,有效核电量,或者说原子核的有效引力是在逐渐增大的。
Whereas, if we go across a row, what we see is that the atomic radius is decreasing.
然而如果我们沿着行来看,我们会看到原子半径在逐渐减小。
Anybody want to guess from the last row what force?
最后一排有同学想猜一下还有什么力吗
And that's all that's big enough to pass through or small enough to pass through. And if we go up even just one row on the periodic table to potassium, what we actually see is now that it's going to be too large, and, in fact, a potassium solvated with one water molecule won't go through our channel.
就是这样刚好大到它通过,或者说刚好小到它通过,即使我们再沿着周期表往下走仅仅一行到钾离子,我们看到的就将是它的个头太大了,实际上,溶解于一个水分子的单个钾离子,不能穿过我们的通道。
应用推荐