Whether you know that?. The curious facts about snow of
Ya very much I like to examine snowflakes - they are so beautiful that they cause admiration. Perhaps therefore I collect data on “ snow “ to a subject. One of the sections “ moneyboxes “ it is devoted to the curious scientific facts concerning snow. I hope, they also will seem to you interesting.
of O “ metric data “
Most often at snow asterisks diameter about 5 mm, and officially registered “ record-holder “ had 12 - centimetric. It is recorded also that on April 30, 1944 in Moscow surprising snow dropped out, the form of snowflakes the size almost in a palm reminded ostrich`s feathers.
By the way, at Herodotus we read: “ In the area lying further away to the North from the earth of Scythians as transfer it is impossible to see anything, and there it is impossible to get from - for the flying feathers. And it is valid, the earth and air are full of feathers there, and it is that and disturbs sight “.
Snowflakes weigh usually about 1 mgm. They for 95% consist of air therefore have the low density and low speed of falling (on average 0,9 km/h).
About “ to a coloring “
Who will argue with the fact that snow white?! Of course, white... usually. But in the Arctic and mountain regions it can be pink or even red of - for colourings the organisms living between crystals (seaweed, for example).
Repeatedly there was a loss of color snow: blue, green, gray...
In 1955 in California (near Dana) happened green snowfall of the phosphorescing shade. The inhabitants who risked to try its flakes on language soon died, and the people taking snow in hand had a rash and a severe itch.
In 1969 in Sweden for Christmas fell down from the sky black snowflakes (eh, the poor thing ecology!) .
A in 2001 in Colorado had pink snow... with taste of a water-melon! It was painted by seaweed “ hlamidomonada snow “.
But if you want to see multi-colored snow in the nature, it is possible not to wait from it for the unusual phenomena, and to make such experiment. Make a narrow opening of 1 m in depth in a pure snowdrift. In it you will find 4 color “ column “: from above - yellowish, then - zheltovato - greenish, is deeper - it is bluish - greenish, and below - blue. For success of experiment it is better to choose cloudy weather or to consider an opening through a cardboard tube.
About “ voices “
When falling in water a snowflake “ sings “ i.e. creates very high-pitched sound, imperceptible a human ear, but, according to experts, unpleasant for the fish population of reservoirs.
Well, and under legs, happens, snow creaks, and only in a frost, and the it is stronger, the distinguished sound is higher. It ice needles break. According to the scientific data obtained as a result of acoustic measurements in a range of this scratch there are two flat (not too sharp) extreme sites which fall on the ranges of 250 - 400 Hz and 1000 - 1600 Hz. Most often the low-frequency extremum on several decibel exceeds high-frequency and if air temperature rises above minus 6 °C, then this the last completely disappears.
About “ population number “ and “ participation “ in planet life
to the German meteorologists managed to be counted that annually to Germany several septillions fall (number with 24 zero) snowflakes from which not to find also two identical. And their general “ number “ it is capable to influence the speed of rotation of Earth. You judge: even in the August most “ snowless “ month when only 8,7% of the planet are covered with a cold down-padded coat, it “ blanket “ 7400 billion tons weigh. By the end of winter the territory of the Northern hemisphere is wrapped up with snow cover in 13500 billion tons.
Besides, having taken control of Earth open spaces, snow “ folk “ strenuously reflects energy of sunshine. From all volume of this reflection about 90% are the share of a snow cover. And the layer of snow only 1 cm high, packed during the winter, gives 25 - 35 cubic meters of water on 1 hectare.
About “ offishness “ and “ modesty “
More than a half of the population of the globe never saw the real snow. It is rather known fact remaining, nevertheless, curious.
Long time the scientist was difficult to photograph a snowflake under a microscope. The first successful attempt took place in 1885. It belongs to the American farmer Wilson Bentley (Wilson A. Bentley), carried so away by studying of this subject that even nicknamed “ Snowflake “. In 46 years of continued practice of U. Bentley created a collection from 5 thousand unique pictures.
And finally... Heard
that at Sami for determination of quality of snow 41 words are in all forms and shapes used. And in it importance of this surprising phenomenon is seen in life of the people.
A you as treat snow?]