太阳光是由红、橙、黄、绿、蓝、靛、紫七色光组成的。由于阳光透过大气时,受到大气中尘埃、水滴、冰晶等微粒的散射,人们看到的光色会有所不同。在晴天时,大气微粒的直径较小,被散射掉的蓝、紫光要大大多于红、橙光,红光的透射力又最强,因此,在日出和日落时,太阳光大多是红、 Sunlight is made up of seven colors of red, orange, yellow, green, blue, black and purple. As sunlight passes through the atmosphere, it is affected by particles such as dust, water droplets, and ice crystals in the atmosphere. On sunny days, the diameter of the atmospheric particles is small, and the scattered blue and violet light are much greater than those of red and orange. The red light has the strongest transmission. Therefore, at sunrise and sunset, the sunlight is mostly red. ,