光的偏振是指光波中电场矢量振动的方向。当光波中的电场矢量在一个特定平面内振动时，我们称之为偏振光。偏振状态可以分为线偏振、圆偏振和椭圆偏振等类型。

【中央大學】物理演示實驗－質量分布對轉動慣量影響 moment of inertia

The problem is I have different wash routines for different things. So here’s one of my more “simpler” ones that I use all the time as well . This wash routine takes me about 4 hours compared to my more longer routines that have a million and one steps . Sometimes the extra steps I include are for my hair to have max hydration (which doesn’t need to be done every wash day). I will post my more extensive one whenever I record it. Sometimes important tips that I’d like to include is that for start

专治动量计算困难 没思路，选对方法，直接提分！ | 小雅老师-高中物理