Why all the rainbow of our planet are curved?
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due to earth's shape & it's atmospheric layers in circular surrounding earth spherical shape
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Why are rainbows curved?
By EarthSky in EARTH | April 14, 2017
A rainbow isn’t a flat two-dimensional image on the dome of sky. It’s more like a mosaic, composed of many separate bits … in three dimensions.

Photo via Eric Rolph

Rainbow over the Brooklyn Bridge. Photo via Jennifer Khordi.
Enjoy science and the beauty of the cosmos? Please donate to help EarthSky keep going.
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Light and raindrops work together to create a rainbow, but why is it curved? Here are some things to remember before you start, or just skip down to some rainbow physics, or skip to the explanation as to why rainbows are curved, below.
Things to remember …
First, look for a rainbow when the sun is behind you, and there are raindrops falling in front of you.
Second, know that – when making the rainbow – sunlight is emerging from many raindrops at once. A rainbow isn’t a flat two-dimensional image on the dome of sky. It’s more like a mosaic, composed of many separate bits … in three dimensions. More about the three-dimensional quality of rainbows below. 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. You’ll never see a circle rainbow from Earth’s surface because your horizon gets in the way. But, up high, people in airplanes sometimes do see them. Check out the photo below.
menu
close
TonightSpaceEarthHuman WorldVideosStargazeStoreToday’s ImageImage SubmissionsDonateSubscribeContact Us
Why are rainbows curved?
By EarthSky in EARTH | April 14, 2017
A rainbow isn’t a flat two-dimensional image on the dome of sky. It’s more like a mosaic, composed of many separate bits … in three dimensions.

Photo via Eric Rolph

Rainbow over the Brooklyn Bridge. Photo via Jennifer Khordi.
Enjoy science and the beauty of the cosmos? Please donate to help EarthSky keep going.
Want PayPal or to send a check to EarthSky? Click here.
Light and raindrops work together to create a rainbow, but why is it curved? Here are some things to remember before you start, or just skip down to some rainbow physics, or skip to the explanation as to why rainbows are curved, below.
Things to remember …
First, look for a rainbow when the sun is behind you, and there are raindrops falling in front of you.
Second, know that – when making the rainbow – sunlight is emerging from many raindrops at once. A rainbow isn’t a flat two-dimensional image on the dome of sky. It’s more like a mosaic, composed of many separate bits … in three dimensions. More about the three-dimensional quality of rainbows below. 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. You’ll never see a circle rainbow from Earth’s surface because your horizon gets in the way. But, up high, people in airplanes sometimes do see them. Check out the photo below.
Robert11111:
Good you are like a open book.
thnks
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