| Added | Fri, 08/06/2018 |
| Источники | |
| Дата публикации | Thu, 07/06/2018
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| Версии |
Everyone knows two things about rainbows: they have rounded shape and they are colorful. June 5 a resident of the village of Dover in Pennsylvania (USA) saw a rainbow that does not fit this description. According to her, it was strange — rainbow was red and practically horizontal.
Nevertheless, it's a rainbow!
Why is it only red? Because there is only red color. All the other colors of the rainbow were scattered by air molecules and dust particles before low-hanging sun. Sunset rainbows are often red, since the intensity of scattering and refraction for different wavelengths are not the same. At sunset the rays of the sun go a long way in the atmosphere and long-wave light (blue) scatters less than short-wave. As a rule, red rainbows still form a complete arc, but this did not work — from behind the clouds. The shadows of clouds near the setting sun stretched across the sky, dimming the greater part of the rainbow. There is only one almost horizontal band.
Translated by «Yandex.Translator»
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