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Why is the sky blue?

Imagine, you spill a bucket of water on the floor. The water will spread all over the floor. Eventually, the floor will be covered with water. The water can't enter the floor because the floor stops it and its surface causes the water to spread everywhere. Same way, The sunlight reaches the earth and the blue light from VIBGYOR gets dispersed around the earth like water. The ozone acts as a floor. Thus, the blue light doesn't enter the earth and surrounds it. This is called 'G-MATRIX EFFECT OF DISPERSION'.

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