A rainbow is a multicolored arc made by sunlight striking raindrops. A rainbow is produced when sun, shining from behind the viewer, strikes water droplets in front at just the right angle.
A rainbow does not actually exist at a specific spot in the sky. Its location depends on where youre standing and on where the sun is located at that time. Its an optical illusion. The sun must always be behind the person seeing the rainbow, and the air must be both sunny and full of moisture.
A rainbow shows up as a spectrum of light: a band of familiar colors that include red, orange, yellow, green, blue, indigo, and violet. Roy G. Biv is a popular name used to help us remember the order of the colors in the rainbows spectrum. Red is on the outer part of the rainbows arch, while violet is always on the inner section of the arch.
Sometimes, a viewer may see a "double rainbow." A second rainbow appears above the first one. The second rainbow is dimmer than the lower, primary rainbow. In a double rainbow, water droplets reflect light twice. The spectrum of the second rainbow is reversed: red is on the inner section of the arch, while violet is on the outside.
A rainbow will most likely show up after its been raining or drizzling. But we can also see rainbows caused by or near other kinds of water, including mist, spray, dew, and waterfalls.
Light coming from the sun appears white. White light is how our eyes perceive all the different colors of the rainbow mixed together. When white light hits a rain droplet, some of it bounces back at an angle, a bit like a basketball in rebound. However, since different colors of light have different wavelengths, the different colors of light bounce back at different angles. Thus, the colors are separated, producing a rainbow.
Source :education.nationalgeographic.co.in/education/encyclopedia/rainbow/?ar_a=1
A rainbow does not actually exist at a specific spot in the sky. Its location depends on where youre standing and on where the sun is located at that time. Its an optical illusion. The sun must always be behind the person seeing the rainbow, and the air must be both sunny and full of moisture.
A rainbow shows up as a spectrum of light: a band of familiar colors that include red, orange, yellow, green, blue, indigo, and violet. Roy G. Biv is a popular name used to help us remember the order of the colors in the rainbows spectrum. Red is on the outer part of the rainbows arch, while violet is always on the inner section of the arch.
Sometimes, a viewer may see a "double rainbow." A second rainbow appears above the first one. The second rainbow is dimmer than the lower, primary rainbow. In a double rainbow, water droplets reflect light twice. The spectrum of the second rainbow is reversed: red is on the inner section of the arch, while violet is on the outside.
A rainbow will most likely show up after its been raining or drizzling. But we can also see rainbows caused by or near other kinds of water, including mist, spray, dew, and waterfalls.
Light coming from the sun appears white. White light is how our eyes perceive all the different colors of the rainbow mixed together. When white light hits a rain droplet, some of it bounces back at an angle, a bit like a basketball in rebound. However, since different colors of light have different wavelengths, the different colors of light bounce back at different angles. Thus, the colors are separated, producing a rainbow.
Source :education.nationalgeographic.co.in/education/encyclopedia/rainbow/?ar_a=1
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