The Blue Sky.
Have you ever wondered why the sky is blue?
Way back my grade school years, I remember that the inquisitive me asked my science teacher one day why the sky is colored such and why not other hue.
My teacher patiently explained it scientifically: it is all about the atmosphere, light waves, colors of light and light in the air. But since I can’t exactly remember the concept and all, I’m quoting the explanation at sciencemadesimple.com:
The blue color of the sky is due to Rayleigh scattering. As light moves through the atmosphere, most of the longer wavelengths pass straight through. Little of the red, orange and yellow light is affected by the air.However, much of the shorter wavelength light is absorbed by the gas molecules. The absorbed blue light is then radiated in different directions. It gets scattered all around the sky. Whichever direction you look, some of this scattered blue light reaches you. Since you see the blue light from everywhere overhead, the sky looks blue.
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