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When is a rainbow formed?

Updated: 10/17/2022
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12y ago

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They are formed when it is raining outside and there is also sunlight.

White light from the sun does not have 1 specific wavelength. It's like asking what is the average height of 5 brothers. All colours have different wavelengths.

When white light is refracted from a water particle. Every colour has a different wavelength. Blue is the shortest and red is the longest. Therefore blue takes more time to cross the water particle then the red wavelength. In fact, all wavelengths from the sun light cross the water particle at different times. This creates a diffraction pattern that is always the same… a rainbow.

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12y ago
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