parvini

How is it possible that a complete circle of a rainbow can sometimes be seen from an airplane?

A friend of mine said he saw rainbow from airplane, so I am curious to know how….

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woodie

At the altitude of the plane the surface of Earth does not block off the lower half of the rainbow. Thus, the full circle can be seen. You can see such a rainbow by climbing on a stepladder above a garden sprinkler in the middle of a sunny day.

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devkinandan

"A rainbow is an optical and meteorological phenomenon that is caused by reflection of light in water droplets in the Earth's atmosphere, resulting in a spectrum of light appearing in the sky. It takes the form of a multicoloured arc. Rainbows caused by sunlight always appear in the section of sky directly opposite the sun."

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