Geography of senior one

If solar radiation meets particles with a diameter larger than the wavelength, it will also be scattered, but this scattering is not selective, that is, all wavelengths of radiation will also be scattered. If there are more dust or fog particles in the air, a certain range of long and short waves will be scattered in the same way, making the sky gray. Sometimes in order to distinguish selective scattering from non-selective scattering, the former is called scattering and the latter is called diffuse scattering.