Why is the sky blue?

After reading @Telesfor article the evening sky 2 https://read.cash/@Telesfor/the-evening-sky-2-44ffac38. Those beautiful pictures made me to write about why the sky is blue at day time.

For years I know our ancestors may have always consider things they can't explain as divine intervention, from earth quakes to tornado. But with science and many brilliant mind, we are now getting answer to all these questions our ancestors could not answer.

Today we have become the magician using only science and technology. What people of the past assumed as magic. Was only the laws of physics taking place. And today we have finally have questions to the answer why the sky is blue and not red or any other colour.

Why the sky is blue?

Well the sky is blue because of the scattering of light Ray's by molecules and atom in our atmosphere, these is know as Rayleigh scattering.

• the scattering of light by particles in a medium, without change in wavelength. It accounts, for example, for the blue colour of the sky, since blue light is scattered slightly more efficiently than red.

From elementary physics we all know that light Ray's are made up of 7colours( ROYGBIV) the seven colours are red,orange, yellow,green,blue,indigo and violet. The seven colours that make up white lights are arrange from the one having longer wavelength (red) to the least wavelength ( violet).

When these white lights coming from the sun reaches the earth atmosphere, our atmosphere is made up of atoms of oxygen, nitrogen, ozone and many more. If these white light reaches our atmosphere, the colour with longer wavelength are absorb or pass through the atmosphere, but those with shorter waves are scattered by the molecules of the elements present in our atmosphere, the blue color of the white light is the one that is scattered the most, these is why the sky is blue during the day.

If you notice at night you don't have a blue sky these is because no light is coming into our atmosphere to be scatter by molecules of elements.

Well I think these is the best way I can explain why the night sky is blue.

Thank you for reading!!!