What is the main idea of this text?
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The colors of a rainbow form an arc because of the angles at which light of different wavelengths reaches your eye.
Rainbows form when sunlight enters raindrops, splits into different color components, and then re-emerges from the raindrops.
You will only see rainbows when there is rain in front of you and somewhat in the distance, and the sun is behind you and fairly low on the horizon.
Sunlight is composed of light of varying wavelengths. Short wavelength light appears blue, and long wavelength light appears red.
1 answer
The main idea of this text is that rainbows form when sunlight enters raindrops, splits into different color components, and then re-emerges from the raindrops.