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Why Is There Usually Only Half A Rainbow?

Updated: 8/10/2023
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SondraC

Lvl 1
15y ago

Best Answer

You need two things for rainbows: raindrops and direct sunshine. If there is sunshine it means that the sky is not completely filled with rain. If it is not filled with rain, then only part of the sky will show a rainbow.

It is possible (not common, though) for a complete rainbow, it just requires direct sun behind you and the entire sky in front of you to have falling raindrops.

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Wiki User

15y ago
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Wiki User

14y ago

You can see more than half of a rainbow, but it requires very specific conditions. A partial rainbow is just "easier". It boils down to the laws of refraction and reflection. The more particles in the air to refract the light, the more light present to be refracted and the fewer particles to interfere with the light's trip to the eye will result in different sizes of rainbow as well as how full of an arc you are able to see.

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13y ago

No you don't!! Maybe it was just the angle

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Q: Why Is There Usually Only Half A Rainbow?
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