[Sky]
Double rainbow is an incredibly beautiful natural phenomenon, but not very frequent, unfortunately. It is caused by the double reflection of sunlight in the raindrops. It is curious that in the second rainbow the colors go in the opposite order: from violet to red. Popular signs consider the double rainbow a very good sign, promising success, and good luck in everything.
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[SKY]
How many colors does the rainbow have? It seems like everyone has known for a long time that it has seven colors. But as it turns out, it’s not all that simple. Isaac Newton was the first to identify seven colors in the rainbow: red, orange, yellow, green, blue, dark blue and purple.
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[Sky]
One of the most interesting and beautiful atmospheric phenomena is the rainbow circles, that has got a scientific name of “gloria”. This is an optical effect that can be seen from an airplane or standing on top of a mountain above the clouds with the source of light behind you.
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