天空呈现的色彩主要是太阳光与大气层相互作用的结果。太阳光是白色光,也可称为多色光(包含了彩虹中的所有色彩),而大气层中含有一定数量的水分(一般是少量的)和灰粉颗粒。白光中的每种颜色都有自己的波长。蓝色的波长最短,折射率最大,即它相对白光弯折的角度最大,黄色和红色的 The color presented by the sky is mainly the result of the interaction between sunlight and the atmosphere. The sunlight is white light, it can also be called multi-color light (including all the colors in the rainbow), while the atmosphere contains a certain amount of water (usually a small amount) and gray particles. Each color in white light has its own wavelength. The wavelength of blue is the shortest and the refractive index is the highest, that is, it has the largest angle of bending relative to white light, yellow and red.