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高中物理第二册（必修）第七章练习一第４题提到了日食、月食，我们在教学中为了证明光的直进性也举日食、月食这一例子．可有不少同学对日食、月食难以理解，对月食和平常看到的月球圆缺的各种形状即月相混为一谈．下面我从它们形成的过程中说明三者的区别．一、日食的形...
High School Physics Book 2 (Compulsory) Chapter 7 Exercise 1 Question 4 mentions solar eclipses and eclipses. We also use eclipses and lunar eclipses in our teaching to prove the straightness of light. There are many students who have difficulty understanding the solar eclipse and the eclipse, and they are confused about the lunar eclipse and the various shapes of the lunar circles that people often see. Below I explain the difference between the three from the process of their formation. One, the shape of solar eclipse...