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If the Earth is round, then why are rainbows curved?

Best Answers

Just know that your eye sees rainbows as flat for the same reason we see the sun and moon as flat disks, because, when we look in the sky, there are no visual cues to tell us otherwise. Third, rainbows are more than half circles. They're really whole circles. read more

When I was a kid, I had a “scientific epiphany” when I was watering my mother’s flowers in the back garden one bright summer day. I was spraying a fine mist, and when I turned my back to the sun, I was amazed to see a rainbow in the mist. read more

Raindrops glint rainbow rays at an angle of 42 degrees from the point directly opposite the sun. All the drops glinting the rainbow are on the surface of a cone with its point at your eye. They can be near and far. Other drops not on the cone also glint sunlight into rainbow colours but their rays do not reach our eyes. We only see those on the cone. read more

The reason why the rainbow is curved is because all the angles in the water drop have to be just right for the drop to send some sunlight to you, standing on the ground. read more

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Why are rainbows curved? | Earth | EarthSky
Source: earthsky.org

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Why are rainbows curved?
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