Rainbows, rainbows

Submitted by Looduskalender EN on Tue, 21.08.2018 - 13:01
Autorid

Rainbow photo without filters sent by   Allar Maaring

English translation Liis

 

Estonian text posted  20.08.2018

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Leisi rainbow
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Leisi Rainbow

The changes between sunshine and showers bring many rainbows into the sky.

A rainbow is  an optical phenomenon – refraction, reflection and diffraction of light in water droplets. The eye of a human distinguishes between red, orange, yellow, green, blue, dark blue and violet. Sometimes we  see several rainbows, or secondary  rainbows with reversed colours above the main rainbow.

Rainbows develop only when the sun is not higher on the horizon than 400.

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