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单词 Work function
释义

Work function

原声例句
华尔街日报

It's also extending into the passenger seat, and let's see how the functions work here.

它也延伸到了副驾驶座位上,让我们看看这儿的功能是如何运作的。

社会学 Crash Course

Factories popped up, changing how work functioned.

工厂如雨后春笋般涌现,改变了工作的方式。

Crash Course 综合篇

If the photon has less energy than the work function, the electron won’t go anywhere.

如果光子的能量小于功函数,电子就不会去任何地方。

Crash Course Physics 速成课物理

If the photon has less energy than the work function, the electron won't go anywhere.

如果光子的能量小于功耦合,电子就不会去任何地方。

Leila和Sabrah的商务英语课

Now if this is a work function, of course, you're going to say which department you work in, what your role is, this kind of thing.

如果这是一个工作职能,当然,你要说你在哪个部门工作,你的角色是什么。

Leila和Sabrah的商务英语课

So we're going to be covering all of that in this lesson and helping you to feel confident that in any kind of work function or a party.

因此,我们将在本课中涵盖所有这些内容,并帮助你在工作场合或聚会中充满信心。

Crash Course 综合篇

But if the photon has more energy than the work function, then some of the photon’s energy will be used up to tear the electron away from the metal, and the rest will give the electron kinetic energy.

但如果光子的能量大于功函数, 那么光子的一部分能量将被用来将电子从金属上撕下来,其余的将给电子动能。

《金融时报》 Podcast

I mean, I really like this white flag business because actually one person I spoke to said at a work function, it's actually OK to say, you know what, it's just been great talking to you, but I have to go soon.

我的意思是, 我真的很喜欢这种白旗业务, 因为实际上我在工作中采访过的一个人说,实际上可以说,你知道吗,与你交谈真是太好了,但我必须尽快离开。

中文百科

功函数

功函数(又称功函逸出功,英语:Work function)是指要使一粒电子立即从固体表面中逸出,所必须提供的最小能量(通常以电子伏特为单位)。这里“立即”一词表示最终电子位置从原子尺度上远离表面但从巨观尺度上依然靠近固体。功函数是金属的重要属性。功函数的大小通常大概是金属自由原子电离能的二分之一。

英语百科

Work function 功函数

Plot of electron energy levels against position, in a gold-vacuum-aluminium system. The two metals depicted here are in complete thermodynamic equilibrium. However, the vacuum electrostatic potential ϕ is not flat due to a difference in work function.
Energy level diagrams for thermionic diode in forward bias configuration, used to extract all hot electrons coming out from the emitter's surface. The barrier is the vacuum near emitter surface.
Energy level diagrams for thermionic diode in retarding potential configuration. The barrier is the vacuum near collector surface.
Photoelectric diode in forward bias configuration, used for measuring the work function We of the illuminated emitter.

In solid-state physics, the work function (sometimes spelled workfunction) is the minimum thermodynamic work (i.e. energy) needed to remove an electron from a solid to a point in the vacuum immediately outside the solid surface. Here "immediately" means that the final electron position is far from the surface on the atomic scale, but still too close to the solid to be influenced by ambient electric fields in the vacuum. The work function is not a characteristic of a bulk material, but rather a property of the surface of the material (depending on crystal face and contamination).

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更新时间:2025/6/23 10:18:47