Why is the sky blue?

One day, Sir threw a question mark in the physics class.

Well, you say I see why the sky is blue?

No one could stop laughing when they heard the question. Hao-Mao started shouting. I pressed my face with great difficulty and thought to myself who is Beta in a scientific way. God will decide whether the color of the sky will be blue or black, what is the use of melting our noses here.

In the meanwhile the light of hope shone and the first girl of the class said with confidence-

Sir, More than 70 percent of the Earth surface is covered by water. Our atmosphere acts as a mirror and cast its image and thus the sky appears blue.

A feeling of contentment in the mind. Daddy survived! Sir, the question will not be asked to anyone. But Sir was not satisfied with the answer. However, he brought the girl a glass of water with her efforts. We all saw that the water was very transparent. Blue is not added.

This time all the students were very quiet but Sir saw our scared face and laughed like Ravan. What's more, Sir's everlasting scientific explanation has begun.

When we look at the sky, we see that the whole sky is blue. As we all know, the color of the sky is blue. But why is the sky blue?

The answer is that there are tiny dust particles floating in the atmosphere around the earth. When light from the sun comes to earth, it is scattered by those particles. And the wavelength of blue light is so short that it is the most diffused, according to Rayleigh's scattering formula. Due to which the sky looks blue in daylight. And at night there is no scattering due to the absence of sunlight and the sky looks black.

@TheRandomRewarder