What do you mean by blue sky and white clouds?

Blue sky means that the sky should be blue, such as blue sky; It can make people feel vast and boundless, and by extension, it is tolerant and generous.

White clouds mean that clouds should be white, such as white clouds, which can make people think of being erratic and clean. Blue sky and white clouds will make people yearn for flying.

Extended data:

The blue sky is actually the earth's atmosphere. China's basic education and popular science circles mainly follow the theory of British physicist Tindal in the middle of19th century to explain the reason for the appearance of "blue sky", although this view was later proved to be not completely correct.

The clear sky is blue, not because the atmosphere itself is blue, nor because it contains blue substances, but because atmospheric molecules and tiny particles suspended in the atmosphere scatter sunlight.

Due to the inhomogeneity of the medium. The phenomenon that light deviates from the original propagation direction and scatters sideways is called the scattering of light by medium. The scattering of fine particles follows Rayleigh's law: the intensity of scattered light is inversely proportional to the fourth power of wavelength.

When sunlight passes through the atmosphere, violet, blue and cyan light with short wavelength are most easily scattered; However, the red, orange and yellow light with longer wavelength scatter weakly, and the sky appears blue due to this comprehensive effect.

Cloud refers to a collection of water droplets or gas or ice crystal colloids that stay in the atmosphere. Clouds are the tangible result of the huge water cycle on the earth. The sun shines on the surface of the earth, and water evaporates to form water vapor. Once the water vapor is supersaturated, water molecules will gather around the dust (condensation nuclei) in the air.

The resulting water droplets or ice crystals scatter sunlight in all directions, thus forming the appearance of clouds. White clouds, literally interpreted as white clouds, are white in appearance.