-
and it's going to be light there but it may not be as light as we would like it.
我们也会胜利的,但可能不会是那么圆满。
-
Well, suppose the red light appeared on or as the nose of a reindeer.
但是当它出现在驯鹿的鼻子上时。
-
And instead of having the electron giving off energy as a photon, instead now the electron is going to take in energy from light and move up to that higher level.
与电子以光子形式施放能量不同,我们现在要从光中,获得能量到一个更高的能级。
-
And so if you say de Broglie's name to many physicists, the tagline they associate with de Broglie is "matter waves" as distinct from light waves.
如果你向很多物理学家提及到德布罗意，他们觉得德布罗意中心思想就是,是物质波不同于光波。
-
The Morning Star is that heavenly body which is the last heavenly body that's still visible as dawn comes in and it begins to get light.
晨星就是,这样一个天体,它是黎明来临,天快亮时,还能看到的,最后一颗星星
-
The philosopher seeks to judge those beliefs in the light of true standards in the light of what is always and everywhere true as a quest for knowledge.
哲学家追寻的是以真正的标准,来评判那些信念,鉴于追寻知识,无论在何时何地皆真的标准。
-
And as you read Lolita, try to notice how much light imagery there is.
你们读Lolita的时候，要注意用的关于光的比喻。
-
So, we'll take a little bit of a step back after we introduce quantum mechanics, and talk about light as a wave, and the characteristic of waves, and then light as a particle. And one example of this is in the photoelectric effect.
等我们介绍完量子力学后,我们要回过头来讨论下光,作为一种波和它的波动性特征,以及光作为一种粒子,其中的一个粒子就是光电效应。
-
Sometimes we model light as beams of light, as rays of light.
有时候我们把光看成光束模型，看成光射线。
-
For example, if we talk about photons, of course, we also just mean light, sometimes we refer to this as electromagnetic radiation, and there's several ways that you might be asked this in a problem or that you might be asked to answer.
举例来说，如果我们讨论光子，当然我们也叫做光，有时候我们看作是电磁辐射，而且这里有几种方式,你可能会在题目中被问到,或者被提问回答。
-
And what we predict as an energy difference between two levels, we know should correspond to the energy of light that's either emitted, if we're giving off a photon, or that's absorbed if we're going to take on a photon and jump from a lower to a higher energy level.
我们预测，两个能级之间的能量差，我们知道，它要么和发出的光有关,如果它发出光子的话，要么它吸收光子,从低能级跃迁到，更高能级上去。
-
So your experiences in France, whatever they are-- interesting as they may be-- can't really cast any light on what it would be like to permanently move to France.
所以你在法国的经验,不管怎么样,即使很有趣,那也不能让人了解,永久地搬到法国是什么样的
-
I move out of the room toward the bathroom, planning to brush my teeth. As I enter the bathroom, it's much more light, I look in the mirror and-- here's where things get really weird--I don't see anything.
我离开卧室走向浴室,要去刷牙,当我走进浴室时,光线明亮了些,我看着镜子,从这里情节就诡异了,我什么也没看到
-
What we had just done a clicker question on is discussing light as a particle and the photoelectric effect, so we're going to finish up with a few points about the photoelectric effect today.
我们刚才做得课堂表决器那个问题,是讨论光作为一个粒子以及光电效应，所以今天我们将以一些,关于光电效应的观点作为结束。
-
I'm sure there's some upper limit as there are to most things, like if we think of wavelengths and different types of light, there is so large that you can get, but you would be approaching that level.
我确信对于大多数事物,都会有一个上限，就像我们考虑波长和不同的光时，那个太大了，但是你可以接近那个量级。
-
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。
应用推荐