相反地，如果原子吸收了这种波长的光子，电子将会翻转自旋向上。
Conversely, if the atom absorbs a photon of this wavelength, the electron will flip up.
所以我们意味着，它们都是自旋向上，记住我们的自旋量子数，是第四个量子数。
So by parallel we mean - they're either both spin up remember that's our spin quantum number, that fourth quantum number.
两种合金的自旋向上能带都具有明显的金属特征，而自旋向下能带有明显的差别；
The majority spin bands of two alloys have visible metallic character and the minority spin bands have obvious difference.
它能一分为二的，事实告诉我们，电子一定有某种新的性质，我们叫它自旋向上或者自旋向下。
And that the fact that it split into two was telling them that there must be some new property to the electron, and what we call that now is either being spin up or spin down.
这意味着在一个原子内,每个轨道上可以有两个电子，对吧，因为对任何轨道,我们可以有自旋向上或者自选向下或者两者都有。
So what that means is that we're limited in any atom to having two electrons per orbital, right, because for any orbital we can either have a spin up electron, a spin down electron, or both.
由于我们在宇宙里,并不知道什么是绝对的上和下，所以说上面的现象很有可能是,一些电子向上自旋引起的。
And since we don't know the absolute up and down in the universe, it is possible that some of the electrons may be spinning up.
由于我们在宇宙里,并不知道什么是绝对的上和下，所以说上面的现象很有可能是,一些电子向上自旋引起的。
And since we don't know the absolute up and down in the universe, it is possible that some of the electrons may be spinning up.
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