Why is the sky blue??

Why is the sky blue??
The sky blue only during the day. There are several reasons why the sky was blue. Earth enveloped in a layer of air called the atmosphere. Although not visible, the air is actually comprised of tiny particles.
The light from the sun scattered by small particles in the atmosphere. But we know, the light from the sun consists of alloys of all colors, from red, yellow, green, blue, to purple. These colors have different frequencies. Red has a smaller frequency of yellow, yellow is less than green, less green than blue, less blue than purple. The greater the frequency of light, the stronger the light is scattered.
The sky is partly scattered sunlight. Because the most dissipated is a high-frequency color (green, blue, and purple), then the sky has a mixture of colors, which when integrated into a bright blue.

Diah Riesca XII-IPA-11/10