所以,这是原本的旋转的,角动量。
So this was originally the spin angular momentum of the wheel.
所以旋转的角动量是,这个方向。
And so the angular momentum of spin of the wheel is in this direction.
因此,总的角动量,有两个向量。
Therefore there is a total angular momentum which is the vectorial sum of the two.
这有一个旋转的角动量,如你们所见。
角动量现在是在这个方向。
力是这个方向,旋转角动量是这个方向。
Torque is in this direction; spin angular momentum's in this direction.
角动量是这个方向了。
我就是旋转的角动量。
观察那个旋转角动量。
注意l,旋转的角动量,已经从这移到了这。
But notice that l, the spin angular momentum, has moved from here to here.
有了旋转的角动量。
我在这个方向加入了角动量,你们可以在这看到。
I add angular momentum in this direction and you see that here.
当我这样做的的是,我将角动量,加到这个方向。
When I do that, I apply, I add angular momentum in this direction.
角动量。
利用特殊函数求解电势、电场,计算了点电荷与磁偶极子相互作用的电磁角动量。
The electric potential and the field of point charge are resolved with a special function.
利用特殊函数求解电势、电场,计算了点电荷与磁偶极子相互作用的电磁角动量。
The electric potential and the field of point charge are resolved with a special function.
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