rainbow

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[Sky]

Have You Ever Seen a Double Rainbow?

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.

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[Sky]

Lunar Rainbow

Did you know that apart from the usual rainbow, there is also a lunar one? Lunar (or night) rainbows are really rare. And the reason is an exact combination of obligatory factors that must coincide in order for a lunar rainbow to appear in the night sky.

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[Sky]

What is the Real Form of the Rainbow?

Did you know that a full rainbow is actually a complete circle? The thing is that it’s not an arc we are used to see but a complete circle partly hidden from us. And only in certain conditions, like being on an airplane or standing on a mountain one can see an amazing view of an entire circular rainbow.

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[Sky]

Rainbow Circles

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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[Sky]

Shining Circle Around the Sun or Moon: What is it?

Sometimes we can see a brightly shining circle around the Sun, the Moon, or even an artificial light source (for example, a lantern). This natural phenomenon is called “halo”. It appears because of the refraction of light in ice crystals in the upper atmosphere at an altitude of 5-10 km.

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