曲面屏手机有什么好处:Why the sky is blue?

The sun's rays hit the Earth's atmosphere, where the light is scattered by nitrogen and oxygen molecules in the air. The blue wavelength of this light is affected more than the red and green wavelengths, causing the surrounding air to appear blue.

大气本身是无色的。天空的蓝色是大气分子、冰晶、水滴等和阳光共同创作的图景。

阳光进入大气时，波长较长的色光，如红光，透射力大，能透过大气射向地面；而波长短的紫、蓝、青色光，碰到大气分子、冰晶、水滴等时，就很容易发生散射现象。被散射了的紫、蓝、青色光布满天空，就使天空呈现出一片蔚蓝了。

When the sunlight enters the atmosphere, a wave length longer colored light, like the thioindigo red, the transmission strength is big, can penetrate the atmospheric 射向 ground; But wave length purple, blue, blue colored light, bumps into the atmospheric member, the ice crystal, the water-drop isochronism, very is easy to have the scattering phenomenon. Scattered purple, blue, the blue colored light covers entirely the sky, caused the sky to present a piece deep blue.