Northern Lights fascinate with its beauty.Our ancestors believed that this extraordinary phenomenon, and carries the threat of human misery.Many residents of the Nordic countries still believe that to see auroras - is a bad sign.Capable of whether this phenomenon actually cause harm?Or is it just a figment of ancient peoples?
Why are there auroras?
aside all the myths and legends, and to take into account a scientific explanation, the phenomenon of aurora is easy to explain.The Earth is a huge magnet, the field lines that emanate from the area of the North Pole, encircle the planet and go in the area of the South Pole.Sun "delivers" the surface of the earth the flow of electrons and protons, the particles reaching the force lines, is ionized gas molecules and atoms.Charged molecules and atoms begin to radiate energy that we see as light a variety of shades.
Interestingly, the green and red glow appears as a result of excitation of atoms of oxygen, infrared and purple - ionized nitrogen molecules.It turns out that the northern lights - particle interaction of solar radiation with our magnetosphere.
Dangerous infrasound
proved that polar illumination generates low-frequency magnetic waves.They are emitted in the range of about 8-13 Hz, which is akin to certain brain rhythms.This phenomenon is also accompanied by a biologically active infrasound.Scientists say that infrasound can exert unpredictable effects on the cardiovascular system and the human brain.
addition, infrasound - it's the culprit of many accidents that have occurred at sea.It is believed that infrasound within 7Hz may even lead to death of the person because it causes vibration of the internal organs, which leads to heart failure.
Where and when you can see the northern lights?
Polar Glow is highly dependent on the activity of the sun.Accordingly, the higher the latter, the more chances to watch this amazing phenomenon.The sky should be clear, and the weather - freezing.The most optimal time for a meeting with him - from 10 pm to midnight.Northern Lights (Picture shows this phenomenon in all its glory) is best observed from October to January.
see such a phenomenon of nature is possible in the polar regions of the Nordic countries.
- Norway.In addition to the Northern Lights, is there another unique phenomenon - the daylight deep blue.
- Iceland.However, in the cities it is very difficult to see the aurora borealis, often it is possible to contemplate outside the settlements.
- Finland (northern regions).In this country, a fairly small level of air pollution, so the northern lights where you can see 200 times a year.
- Russia.In our country, a phenomenon observed in Yakutsk, Murmansk, Salekhard, on the Taimyr Peninsula in most other northern areas.
- Alaska.
- Sweden (Kiruna).
- Greenland (south).
truly amazing phenomenon of nature!Northern Lights fascinates millions of people with its beauty.Many people dream of seeing with my own eyes this amazing phenomenon.Anyone who has ever beheld this wonder of the world, will not be able to forget it ever.
