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     Today I am going to explain how rainbows form.  Well, rainbows are optical and meteorological phenomenon that are formed by the reflection of light in water droplets that fall into earth's atmosphere.  They result into a spectrum of light that appear in the sky.  
     The rainbow that shows red on the outer part and violet on the inner side is known as a "primary rainbow".  Another type of rainbow is a "double rainbow".  This type of rainbow has a second arc that is seen outside of the primary arc.  It also has the order of its colors reversed, so red is facing towards the other one in both of the rainbows.  




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