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你可曾想过彩虹是怎么来的?为什么它的内侧比外侧亮呢?为什么有时会出现两条呢?这些问题的答案涉及了光学、几何、三角以及微积分,这篇文章将介绍一些与彩虹有关的光学和数学。反射律和折射律彩虹是由于阳光在水珠中折射和反射所造成的。图1表示光线射入空气和水的交界处的情形,有些光线被反射,有些被折射,而产生反射线和折射线,这些光线都遵守下面
Have you ever wondered how the rainbow came from, and why its inner side is brighter than the outer side? Why sometimes there are two? The answers to these questions involve optics, geometry, trigonometry, and calculus. This article will describe some of the Rainbow related optics and mathematics. Reflex law and refraction law The rainbow is caused by the refraction and reflection of sunlight in the drops of water. Figure 1 shows the incident light and water at the junction of the situation, some of the light is reflected, and some are refracted, resulting in reflections and refraction lines, these light obey the following