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Why is rainbow a half circle? How come the water droplets in the air right next to it do not get the same light spectrum effect?
Nature & Pets
BY Guest
Sunday 25th of June 2017

Answers

The whole trick with the rainbow is that sunlight enters droplets and exits them at an angle 40-42 degrees. Naturally, rainbow is "everywhere" (up, down, on both sides), but since we can only see it at 40 degree angle - other parts of rainbow adjacent to color lines appear not colored.. The best way to imagine curve phenomena is to think that our eyes are the tip of the imaginary cone and the bottom of that imaginary cone is actually a rainbow. Rainbow forms a full circle, but horizon prevents us from seeing the whole full-cricle rainbow. Thank you so much for your challenging question! Please register to be able to answer other kids questions. Zacky

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