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。

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

youdao

我相信，你们在物理课上都学过光是如何以微观的方式运动的，以及只有在光的波长在特定的范围内时我们才能看到光这一事实。

I am sure you all know from physics class about how light moves in microscopic ways and that we can only see light when the wavelength of that light is in a specific range.

youdao

若这个常数呈现不同值时，光的波长也将变化。

If it were to take on a different value, the wavelengths of these lines would change.

youdao

Just remembering that violet is the end that actually has the shortest wavelength, which means that it also has, of course the highest frequency.

就知道了，所以这应该,不是问题，记住紫色光，最后一个，它的波长最短,也就意味着它的频率最高。

麻省理工公开课 - 化学原理课程节选

I'm sure there's some upper limit as there are to most things, like if we think of wavelengths and different types of light, there is so large that you can get, but you would be approaching that level.

我确信对于大多数事物,都会有一个上限，就像我们考虑波长和不同的光时，那个太大了，但是你可以接近那个量级。

麻省理工公开课 - 化学原理课程节选

If de Broglie is correct, let's irradiate the nickel crystal with a beam of electrons where the wavelength of the beam of electrons is identical to the wavelength of the x-rays that were used and see what we get.

如果德·布罗意是正确的，那么镍晶体放出,电子光束,电子束的波长,和原来讲过的X光的波长是相等的,再看看得到了什么。

麻省理工公开课 - 固态化学导论课程节选