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

Spinning Christmas Trees: Festive Sound Experiment

* EMERGENCY FOOD TASTE TEST SERIES * no, we are not in an emergency. This is a series on trying emergency foods. 😉 • no, this is not something just sold in an American grocery store. Emergency food is sold online. Steak & Eggs for breakfast using freeze dried filet mignon, powdered eggs, freeze dried cheese, and powdered butter • Dehydrated eggs retain their nutritional value. Also, freeze dried food retains 90-97% of their nutritional value. 😁 It’s just food that has their moisture removed so

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