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Kaner Sharma from Modern Defence Sr. Sec School,sheoganj , asked a question
Subject: Science , asked on 7/2/13

 why the rainbow is in semi circle? why cant be a circle?

Nikita , From St. Joseph's Convent Sec School , added an answer
Answered on 7/2/13

 it is a full circle, because the perfectly spherical water droplets in the air split the white sunlight into the spectrum which you see as a rainbow. The light comes in at an angle, and then reflects out at an angle. From your perspective on the ground, that angle exsists in a full 360 degree arc - a circle. You only see a semi-circle because either the earth gets in the way of seeing the rest, or because there isn 't sufficient water suspended in the atmosphere to see the whole thing.

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Simpple Btt Complicated , From Noowhwree , added an answer
Answered on 7/2/13

Why it cant be a square or any other polygon???

Utsav Asthana , From St. Patrick's School , added an answer
Answered on 17/2/13

actually its a whole circle but we see a semicircle coz the water droplets are above us but if u sit an an aeroplane u can see the whole rainbow in the shape of a circle coz there the water droplets are present both above and below the plane

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