Some call it miracle, others constantly live in an environment of this natural phenomenon. And it is just interesting to the third why all as it is. And this phenomenon – white snow.
Many people, except those who live in the countries where there is never a winter, know what is snow. This seasonal natural phenomenon when cold weather holds down the earth and the frozen kristallik of water drop out in the form of separate snowflakes. And everything shrouds a white fluffy carpet. Necessarily there is a question and why white. As is well-known, water differs in the transparency and ice in principle too has to be such. Explanation for it rather simple.
White snow
They say that each snowflake is individual. Two similar beauties of winter are absent. And this is true. They consist of the frozen water but frozen not just like that. As a part of snowflakes a huge number of the smallest ice kristallik. And they not so smooth as it is possible to imagine, and possess numerous sides. And then already usual sunlight goes into action. It cannot pass a snowflake through, and constantly is reflected from sides, as does snow white. There is a certain optical effect thanks to which we and know expression "white winter".
If to take a closer look, it is possible to distinguish dozens of shades of ""white"" snow.
Smallest crystals of water are the just frozen water vapor which contains in clouds. If to get highly into mountains, it is possible to appear in crude fog. This that cloud from which when cooling snowflakes turn out. Small crystals submit to air flows, moving up and down. On the course of such movement they face other kristallika, connect together and form those snowflakes which already reach the final destination – the earth. The form of crystals can be various, but most often is an or six-pointed star, or a plate in the form of a hexagon. Surprisingly, but each such side in accuracy repeats next. And well-known white snow is formed.
Multi-colored snow
Contrary to the developed opinion, snow is far not only white. Cases of loss of color precipitation are known. These are very known cases, one of which was described by Charles Darwin. During one of the scientific travel, he paid attention that on hooves of pack animals there were red spots, but it was not blood. During the research it turned out that it is just pollen of a local plant which accumulated on just dropped out snow.
Snow can be all colors of the rainbow, usually as a result of accident or influence of the person.
Other factors also can influence change of color of snow. For example, arrangement in snow-covered area of large chemical plant or enterprise. So emissions of sulfur can give yellow color of snow, and manganese – are red. This effect is known to inhabitants of industrial regions and a raznotsvetiya of snow they are not surprised for a long time.