Why the Sky Is Blue

The sky above us looks blue on a sunny day; in the evening it puts on a brilliant red. So why is the sky blue? This is the question that James Jeans tried to answer in his article “Why the Sky Is Blue”. The explanation of this phenomenon is that the sky is composed by lights, and lights are just waves, and t the different colors of light are produced by waves of different lengths. The long waves have blue color, and the short waves have blue light. The obstacles that exist in the atmosphere affect the waves with red light, but the wave with blue light are not affected, this is the cause that gives us the blue color of the sky.

In the following website, you will find many information about this topic http://www.sciencemadesimple.com/sky_blue.html

And also you will find more information about this topic in the following video: