When learning about the photoelectric effect, you'll often come across the term " work function."

在习光电效时，你会经常遇到“功函数”这个术语。

These diverse applications all stem from the photoelectric effect.

这些不同的源于光电效。

This was a time when scientists were still unable to understand the observations of the photoelectric effect.

在那个时代，科家们仍然无法理解光电效的观测结果。

Just because a light ray has a high intensity doesn't mean that it will cause the photoelectric effect.

光的强度高并不意味着它就会引起光电效。

In 1839, French physicist Edmund Becquerel first observed the photoelectric effect.

1839 年，法国物理家埃德蒙·贝克勒尔首次观察到光电效。

Their work combines into a single unit the photoelectric cells that gather sunlight and the electrolyzer that produces hydrogen.

他们发明出吸收太阳光的光电池以及生成氢气的分解剂。

The photoelectric effect works in a similar way.

光电效也以类似的方式起作。

That's the technical definition, but allow me to explain the photoelectric effect using an example of toll booths and traffic.

这是它的物理定义，但请允许我一个收费站和交通的例子来解释光电效。

Simply put, the photoelectric effect is a phenomenon in which light hits metal, resulting in the knocking off of electrons.

简单地说，光电效是一种光照射金属，导致电子脱落的现象。

The photoelectric effect is used in solar power and various devices, such as photodetectors in cameras, burglar alarms, and industrial automation.

光电效于太阳能发电和各种设备，如照相机中的光电探测器、防盗报警器和工业自动化。

This explained what is known as the photoelectric effect for the first time.

这首次解释了所谓的光电效。

Einstein, for instance, won his primarily for his work on the photoelectric effect.

例如，爱因斯坦主要因其在光电效方面的工作而获奖。

The photoelectric effect has many practical uses in the real world, with the most significant being the generation of solar power.

光电效在现实世界中有许多实际途，其中最重要的是太阳能发电。

We also talked about photons, and how the photoelectric effect proves the particle nature of light.

我们还讨论了光子以及光电效如何证明光作为粒子的性质。

Despite this, Einstein did not win the Nobel Prize for relativity, but for the photoelectric effect.

尽管如此，爱因斯坦并没有因为相对论而获得诺贝尔奖，而是因为光电效。

The photoelectric effect is where electrons are emitted when electromagnetic radiation, such as light, hits off a material or substance.

光电效是当电磁辐射（例如光）撞击材料或物质时发射电子的现象。

The results of all these tests with the photoelectric effect matchup with the predictions of the particle theory of light.

所有这些与光电效有关的测试结果与粒子理论的假设一致。

This photoelectric effect is easier to understand than relativity, so it took several decades for relativity to be gradually accepted.

这种光电效比相对论更容易理解，因此相对论花了几十年的时间才逐渐被接受。

But Einstein suggested a way to prove whether light traveled in these discrete packets: an experiment involving the photoelectric effect.

但是爱因斯坦提出了一种方法来证明光是否在这些离散的数据包中传播：一项涉及光电效的实验。

Let's fast forward another 100 years, to 1905. Scientists around this time had become puzzled by something known as the photoelectric  effect.

让我们再快进 100 年，到 1905 年。 此时的科家对光电效感到困惑。