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Why Is the Sky Blue

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2.) Is blue sky polarized, is the sun polarized? Blue light reflected from a glass table polarized? Why do some sunglasses block glare of off water and others do not? What other applications are there for polarizers?

In this second extra credit I am going to talk about the sun and how different polarizer’s work. As I stated above rainbows can come in different forms; to elaborate on this topic I am going to talk about the different types of rainbows. There are primary rainbows, secondary rainbows, spurious rainbows, supernumerary rainbows, fogbows or white rainbows, and lunar rainbows. The main thing that is talked about between primary rainbows and secondary rainbows is that they can be reflected off each other. Simply put a secondary rainbow is a rainbow that is reflected twice of the drop. This means that instead of looking like a normal rainbow that has red, orange, yellow, green, blue, and violet respectively from the outside in. They are opposite which means that the colors are reversed. Some other the other rainbows are the spurious or supernumerary bows which is a mix of a primary and secondary rainbow. These rainbows are faint in color and are hard to see because they are a mix of a secondary and primary rainbow. Some of the special rainbows that are rarely seen by humans are the lunar rainbows because they are caused by the moonlight. With these rainbows the colors are different than regular rainbows because the light source is the moon. They appear as white and different shades of grey. Now before I start talking about why the sky is blue I want to first talk about each of the seven colors in the rainbow. I hope that this has cleared up any confusion that you had about this subject.

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