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Rainbow

by Kaitlyn

The sun is always behind you when you face a rainbow. The center of the circular arc of the rainbow is in the opposite direction to that of the sun. The rain is in the direction of the rainbow.

The traditional rainbow is sunlight spread out into its spectrum of colors . The ‘bow’ part of the word rainbow is a group of nearly circular arcs of color with a common center.

The traditional description of the rainbow is that it is made up of seven colors and they are red, orange, yellow, green, blue, indigo, and also violet. Actually, the rainbow is a whole continuum of colors, from red to violet and even beyond the colors that the eye can see.

Sunlight is made up of the whole range of colors that the eye can see. The range of the sunlight colors, when combined, looks white to the eye.

Sometimes we see two rainbows at the same time.

When light is reflected at some kind of an angle, it becomes polarized.

There is a contrast that is between the sky that is inside of the arc and outside it. When you study the refraction of sunlight on a raindrop, you find that there are many rays emerging at angles.

In some kinds of rainbows, faint arcs just inside and almost near the top of the primary bow can be seen. These are called superlunary arcs and were explained by Thomas Young in 1804.



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