Why is the sky blue? Questions like that sometimes come to mind when we see the sky when the weather is sunny. Whether the sky is blue because of the reflection of the sea or something else that causes the color.
Our Earth is surrounded by an atmosphere that is not colored. The color that occurs is due to the sun. But do not get me wrong first, the sun is actually also white (monochromatic light). Then why else can be colored.
We need to know that light is energy that radiates through waves. The bright white sunlight is a combination of several colors. These colors have different wavelengths and energies.