All right. So please raise your hand now if you think there'll be sufficient energy to eject electrons from the metal surface?

好的，如果你们认为,有足够的能量从金属表面,射出电子请举手？

麻省理工公开课 - 化学原理课程节选

Intensity, if we increase the intensity, we're not increasing the energy in each photon, we're just increasing the number of photons that we're shooting out of our laser, whatever our light source is.

强度，如果我们增加强度，我们增加的不是,每个光子的能量，我们增加的仅仅是,从我们激光源射出的光子数，无论我们的光源是什么。

麻省理工公开课 - 化学原理课程节选

If you squeeze the trigger of a gun really hard and really fast, it doesn't fire any faster or harder than if you just squeezed it gently.

快速有力地扣动扳机,并不比你轻扣扳机,射出的更加快速或更加有力

耶鲁公开课 - 心理学导论课程节选

One should do," he says, "what archers do when attempting to reach a distant target, namely, aim your bow high, knowing that the force of gravity " will bring the arrow down."

他说：，“一个人应该做的是，模仿伟人所为,当试图达致遥不可及的目标时，意即将目标设高，明了重力会将,射出的箭吸回地面“

耶鲁公开课 - 政治哲学导论课程节选

We have a zinc plate up here, and we're going to -- in a minute I'll describe how we can probe if electrons are coming off of it.

我们有一块向上的锌板，我们将在一分钟内描述,我们是怎样探测出,是否有电子从上面射出的。

麻省理工公开课 - 化学原理课程节选

So we can figure out the energy of each photon emitted by our UV lamp by saying e is equal to h c over wavelength.

所以我们可以计算出,每个从紫外光源射出的光子,也就是e等于h乘以c除以波长。

麻省理工公开课 - 化学原理课程节选