Snowflakes )))))

[Faw_Peter]

How we draw the snowflakes correct?
Depending on the designer, snowflakes have different forms and several levels of complication, from four to nine corners, are more "loaded" or "naked" of models but, never alike. Even if the Christmas and New Year have passed and, maybe we do not need snow anymore, in the city, still have remained, different globes, winter installations, cards as snowflakes, because the winter holidays are symbolized by two things, by the red of the Santa Claus and by the snow.

[Faw_Peter]

Depending on the designer, snowflakes have different forms and several levels of complication, from four to nine corners, are more "loaded" or "naked" of models but, never alike. LiveScience points out that the only way of existence in nature of snowflakes is only with six corners, all other representations, the most common form being octagonal, are wrong in scientific terms even if they are outstanding from artistic point of view.

[Faw_Peter]

This detail can be explained by the fact that water molecules in the crystalline state, solid, connected by hydrogen bonds, forms a crystalline network with hexagonal shape, being the form of arrangement, with the lowest energy of water at low temperatures. This hexagonal symmetry of arrangement of water molecules at microscopic scale is respected and at macroscopic scale, hence and the six corners forms of the snowflakes. The environmental conditions of temperature and humidity, which vary, makes the appearance of the flakes to be different, remaining alike only the pattern of symmetry with six corners.

[Faw_Peter]

As a general information, hexagonal form of ice crystals determines an extremely important phenomenon in nature, that is an anomaly of thermal expansion of the water. If to substances, normally, with the temperature decreasing, their density increases, ie the same number of molecules occupy less space by loss of energy, for water that is valid only up to a temperature of 4 degrees Celsius.

[Faw_Peter]

By lowering the temperature below this value, the density of water increases, due to this hexagonal disposal in the solid structure of water, the hexagonal structure being a "loose" she occupies a large volume, making the arrangement in space of the same molecules to be higher. In nature, this kind of anomaly of thermal expansion of the water is an important determinant of erosion when water enters the rock and freezes, explaining the fact known to all that ice has a larger volume than water.
Even if the snow flakes are well represented no matter of their form, we can think from now on that even if we draw them, to do correctly in all respects. uper