Have you ever stared out your window and wonder what’s above all the blueness?
Well let’s put it this way the sky isn’t blue. Many people don’t realize the sky isn’t blue.
From the day you were born the Sky was always blue but have you ever wonder why it is blue, well today you’re going to get the real answer.
So first to understand how the sky is blue you need to know light isn’t only one colour. While the light looks white, it is actually made up of all the colour of the rainbow, like sound, light travels in waves. There are different colour and the have their own wave sizes. The Sun light enters in a straight line to earth unless something gets in its way to either reflected it or let it bounce off a mirror or something blocks it. Any colour waves is all shorter than red, Did you know takes 8 minute and 20 seconds for the sun’s light to reach earth.
All around the earth surface is called atmosphere, the atmosphere is made up of billion of little oxygen and nitrogen molecules that float around in the sky . As the sun shines into the atmosphere most of the colours that are able to reach to the earth’s surface won’t be able to get stopped or blocked. However, blue light is scattered in all kinds of directions by the tiny molecules of the air in earth than other colours because blue travels in shorted waves. Some molecules will be affected by some of the light on its way to earth .
The blue light then bounces around the atmosphere to make every part of the sky blue. The other colors red orange and yellow also bounces off the molecules but the blue light scattered the strongest and can see the most clearly. Closer to the horizon, the sky fades to a to a light blue or maybe even get to a white. This is because as the light get closer to earth , it has travelled further and the light has been scattered and re-scattered many times in many directions. This mean the blue waves are the shortest that’s why the sky is blue.