Why are rainbow curved in shape?

Asked by RAM CHANDER | 15th Nov, 2010, 11:25: PM

Expert Answer:

Dear student
The sunlight that shines into a raindrop leaves that raindrop at an angle of 138 degrees from the path that the light traveled before it entered the drop. That’s the “rainbow angle,” discovered by Descartes in the year 1637.
The sunlight emerges from many raindrops at once. The combined effect is a mosaic of light, spread out in an arc in the sky.
We hope this clarifies your doubt.
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Answered by  | 16th Nov, 2010, 01:29: PM

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