What is rainbow
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Meghna Thapar 4 years, 4 months ago
“Rain”, because normally it's associated with rainfall since the water droplets act as tiny prisms that resolve the white light into the different colours. Each colour is identified by a certain frequency. ... So, “rainbow” refers to a bunch of colours distributed in arc-like shape. Rainbows appear in seven colours because water droplets break white sunlight into the seven colours of the spectrum (red, orange, yellow, green, blue, indigo, violet). You can only see a rainbow if the Sun is behind you and the rain in front.
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