So, let's say they were expecting to see one certain frequency or one line in the spectrum at this point here.

比如说他们预计会看到某个特定的频率,或者在这里看到一个谱线。

麻省理工公开课 - 化学原理课程节选

So, if something cycles through five wavelengths in a single second, we would just say that the frequency of that wave is five per second.

如果一个东西在一秒,内经历了五个波长，我们就说这个波的,频率是每秒5次。

麻省理工公开课 - 化学原理课程节选

In the works that Milton is going to be publishing now with greater and greater frequency, it's this Spenserian ideal of marriage that will be the new and, believe me, the endlessly complex Miltonic subject.

在弥尔顿准备出版的作品中,越来越常出现的，是斯宾塞式的婚姻理想，那将是崭新的，相信我，也是无尽而复杂的弥尔顿风格的题材。

耶鲁公开课 - 弥尔顿课程节选

We would specify a precise frequency here another one up here but what that gentleman was singing was all the stuff in between.

我们指定一个特定的频率,标记在这里,另一个频率标记在这里,但刚才那位先生唱的,都在音符之间游走

耶鲁公开课 - 聆听音乐课程节选

Fire reappears with increasing frequency in the late poetry.

晚期诗里火出现更频繁。

耶鲁公开课 - 现代诗歌课程节选

You're also free to write it in terms of the frequency.

你也可以用频率来表示

耶鲁公开课 - 基础物理课程节选

The second one is the frequency of firing in that something is more intense if it's "Bang, bang, bang, bang, bang, bang" then "Bang, bang, bang" and these are two ways through which neurons encode intensity.

第二个是产生神经冲动的频率,如果先是 "砰 砰 砰 砰 砰",然后变成,"砰,砰,砰",这是由于神经元反应强度更大了,这便是两种,会影响神经元反应强度的因素了

耶鲁公开课 - 心理学导论课程节选

So, similarly in a case where instead we have a small energy difference, we're going to have a low frequency, which means that we're going to have a long wavelength here.

在这个例子里,能量差较小,我们得到的频率低,这意味这它的波长更长。

麻省理工公开课 - 化学原理课程节选

So, for example, we were talking about a threshold frequency as in a minimum frequency of light that you need in order to eject an electron from a metal surface.

举个例子来说，我们谈论的临界频率是,光从金属表面逐出一个电子,所需的最小频率。

麻省理工公开课 - 化学原理课程节选

It has to do with frequency ratios that we'll go in to a little bit next time.

它和频率比有关,下次我们再详细介绍

耶鲁公开课 - 聆听音乐课程节选

So, one thing they did, because it was so easy to measure kinetic energy of electrons, is plot the frequency of the light against the kinetic energy of the electron that's coming off here. And in your notes and on these slides here, just for your reference, I'm just pointing out what's going to be predicted from classical physics.

他们做的其中一件事,因为测量电子动能是很容易的，就是画出光的频率,和出射电子动能之间的关系,在讲义的这里，仅仅是,为了做个比较，我要指出，经典物理所给出的预测,这个不作为对你们的要求。

麻省理工公开课 - 化学原理课程节选

So that should mean that the energy that's transferred to the electron should be greater, but that's not what you saw at all, and what you saw is that if you kept the frequency constant there was absolutely no change in the kinetic energy of the electrons, no matter how high up you had the intensity of the light go.

所以这意味着转移到电子,上的能量也越大，但这并不是，我们观测到的现象,我们所看到的是,如果固定光的频率不变,不管光强如何变化,电子的动能没有任何变化。

麻省理工公开课 - 化学原理课程节选

And I use the term photon here, and that's because he also concluded that light must be made up of these energy packets, and each packet has that h, that Planck's constant's worth of energy in it, so that's why you have to multiply Planck's constant times the frequency.

我这里用光子这个词,是因为他还总结出光,必须由这些能量包组成，每个能量,包有这个h，普朗克常数代表,里面的能量，所以这就是为什么你们,要用普朗克常数乘以频率。

麻省理工公开课 - 化学原理课程节选

So this is our final equation, and this is actually called the Balmer series, which was named after Balmer, and this tells us the frequency of any of the lights where we start with an electron in some higher energy level and we drop down to an n final that's equal to 2.

把2代入到这里，所以得到1除以,这就是我们最终的方程，这叫做Balmer系，以Balmer名字命名的,它告诉我们从高能级掉到n等于2的,最终能级所发出光的频率。

麻省理工公开课 - 化学原理课程节选

So let's do a sample calculation now using this Rydberg formula, and we'll switch back to emission, and the reason that we'll do that is because it would be nice to actually approve what we just saw here and calculate the frequency of one of our lines in the wavelength of one of the lines we saw.

让我们用Rydberg公式,做一个例题，我们回到发射上,这么做是因为这样,可以用我们看到的波长,来验证我们计算的频率。

麻省理工公开课 - 化学原理课程节选