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. 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 you can see, if it's spinning on its own axis in this direction we 'd call it spin up, where as this way it would be what we call spin down. 你们可以看到,如果它绕自己的轴朝这个方向转,我们就说它是自旋朝上,这个方向我们叫它自旋朝下。
The downside of this fix is that the hard drive doesn't spin down. 这个修复的负面影响就是造成硬盘不会减慢旋转。
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. 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。
The tunneling coefficients of electrons with spin up and spin down are different when a magnetic field is applied. 在外加磁场的作用下,自旋向上的电子与自旋向下的电子具有不同的隧穿系数。