All substances, all forms of matter, can be distinguished according to what wavelength of light they absorb and which ones they reflect.

所有形式的物质，都可以根据它们吸收的光的波长以及反射的光的波长来区分。

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This wavelength of light can penetrate several centimetres into the skin.

这种光波可以穿透皮肤几厘米深。

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Those lasers produce one wavelength of light that doesn't stop unless the power is cut.

这些激光器产生一个具有波长的光，它不会停止，除非电源被切断。

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So, if you use a black lamp or something and you excite something up to a higher energy level and then it relaxes back down to its lower energy state, it's going to emit a new wavelength of light, which is going to be visible to you.

如果你用一个紫外灯或别的,东西把某种分子激发到,更高的能级，然后它会掉回,到低能级，它就会释放,一个新的波长的光,这个光是可见的。

麻省理工公开课 - 化学原理课程节选

And the relationship that he put forth is that the momentum is equal to Planck's constant times nu divided by the speed of light, or it's often more useful for us to think about it in terms of wavelength.

爱因斯坦提出的关系式是,动量等于普朗克常数,乘以υ除以光速，或者用波长来表示,通常更容易让我们想明白。

麻省理工公开课 - 化学原理课程节选

Alright. So, since we have these terms defined, we know the frequency and the wavelength, it turns out we can also think about the speed of the wave, and specifically of a light wave, and speed and is just equal to the distance that's traveled divided by the time the elapsed.

好了，我们已经定义了，这些术语，我们知道了，频率和波长，现在可以来考虑,波的速度了，特别是光波的速度，速度等于它走过的距离,除以所用的时间，因为我们。

麻省理工公开课 - 化学原理课程节选

That measurement uses another sort of optical distortion this time of the wavelength of light.

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The features on a chip would shrink so much that they would be smaller than a wavelength of light.

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Already semiconductors are commonly produced with resolutions that are a fraction of the wavelength of light used to produce them.

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