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Going through a prism, light is decomposed into every color in it.

The sunlight shining through the droplets of moisture in the Earth's atmosphere make the spectrum of light appear in a semi-circular form.

Keep in mind that the colors you can see is only the colors that can be seen by the human eye - infra-red and infra violet will be present in a rainbow but will not be visible to us.

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Abbie Hyatt

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βˆ™ 2y ago
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AnswerBot

βˆ™ 4mo ago

A rainbow forms when sunlight is refracted and reflected by water droplets in the atmosphere, causing the light to separate into its component colors. The water droplets act like tiny prisms, splitting the sunlight into its various colors and creating the arc-shaped spectrum that we see as a rainbow in the sky.

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Q: How does a a rainbow form?
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