Five curiosities that you might not know about the arcoris - La Provincia
The World Rainbow Day It is celebrated every April 3 and it is one of the most curious and beautiful natural phenomena that appears when sunlight traverses the raindrops at an angle of 42 degrees.
Although it is very common to see the rainbow during a rainy and sunny day, you may not know certain curiosities about this beautiful phenomenon.
1. You can not see all the colors of the rainbow
The rainbow covers a spectrum of colors that extends from red to violet. Depending on the cultures it is considered that there are between three and nine colors. Although this is only what reaches the human eye because, in reality, it contains an infinity of colors.
2. The rainbow rarely appears at noon
In order for the rainbow to appear in the sky, several conditions must be met. It has to rain and make sun at the same time, but it is also necessary that the star is less than 42 degrees above the horizon. The lower the sun is, the more visible the rainbow will be, that's why it's Uncommon to appear during noon.
3. It is impossible to see the end of the rainbow
You can try to reach the end of this, move from an angle or ask who is away from you, but it is impossible to see the end or the beginning of the rainbow. This is because the radiation that forms this phenomenon depends on the distance and the angle to which the observer is, so the rainbow moves with you.
4. It is possible to make the rainbow disappear
If you wear polarized glasses you can make it disappear before your eyes. As its name suggests, the type of crystal of these glasses is created to make disappear the light 'polarized', that is to say, the light that is reflected in the horizontal surfaces and that is quite dazzling.
5. A rainbow may appear at night
Even though it needs sunlight to appear, it can also be shown with the full moon. This reflects the solar rays that emit or hit the raindrops and give way to the appearance of a light spectrum that can be called 'night rainbow'.