能量金属Power Metal,也叫力量金属。形容从NWOBHM乐队到略带硬核摇滚风格的Pantera的全部音乐内容。
新的巴士座位设计成为更高、更宽、更厚的,所有金属表面将会有填充物覆盖,所有这些设计都是为了在碰撞中吸收能量。
New bus seats are higher, wider and thicker, and all metal surfaces are covered with padding-all of which absorb energy in a crash.
正如学校化学课中展示的那样,金属镁化学性质非常活泼,储存着大量能量。
As school chemistry lessons show, metallic magnesium is highly reactive and stores a lot of energy.
不像光线普照的太阳,染料和金属纳米粒的混合会释放正好的能量来碰触电子无损耗的脱离。
Unlike the sun, which scatters its energy across the board, the dye/nanoparticle mix delivers plasmons of the right energy to knock electrons free without waste.
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?
So, we do this here for the photoelectric effect, and in terms of the photoelectric effect, what we know the important point is that the incoming photon has to be equal or greater in energy then the work function of the metal.
所以,我们做这个是为了说明,光电效应,在光电效应方面,我们知道的最重要的事情,就是入射的光子能量必须等于,或者大于金属的功函数。
So, if we want to go from that stable state to that less stable state, we need to put in a certain amount of energy to our system, that difference between the free electron and the electron bound to the metal.
所以,如果我们想使电子,从稳态到达不够稳定的状态,我们需要引入一定数量的,能量到系统中,即自由电子和束缚于金属的,电子的能量差。
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