Northern lights fascinate with their beauty.Our ancestors believed that this extraordinary phenomenon is a threat and misfortune to a person. Many people in northern countries are still confident that seeing the aurora is a bad sign. Is this phenomenon really harmful? Or is it just a fiction of ancient peoples?
Why do the northern lights appear?
If we discard all myths and legends, and take intoattention is only a scientific explanation, then the phenomenon of the aurora is easy to explain. The Earth is a huge magnet whose lines of force radiate from the North Pole area, encircle the entire planet and exit to the South Pole area. The sun "supplies" the earth's surface with a stream of electrons and protons, these particles, reaching the lines of force, ionize the molecules and atoms of gases. Charged molecules and atoms begin to radiate energy, which we see as the light of a wide variety of shades.
Interestingly, the green and red glowappears as a result of the excitation of atoms of oxygen, infrared and violet - of ionized nitrogen molecules. It turns out that the northern lights - the interaction of particles of solar radiation with our magnetosphere.
Dangerous infrasound
Proved that the polar glow generateslow frequency magnetic waves. They are emitted in the range of about 8-13 Hz, which is akin to some rhythms of the brain. This phenomenon is also accompanied by biologically active infrasound. Scientists say that infrasound can have an unpredictable effect on the cardiovascular system and the human brain.
In addition, infrasound is the culprit for manycatastrophes that occurred at sea. It is believed that infrasound within 7 Hz can even lead to the death of a person, as it causes the vibration of internal organs, and this leads to cardiac arrest.
Where and when can you see the northern lights?
Полярное свечение сильно зависит от активности the sun. Accordingly, the higher the latter, the greater the chance of observing this amazing phenomenon. The sky should be clear and the weather should be frosty. The best time to meet him is from 10 pm to midnight. Northern Lights (photo demonstrates this phenomenon in all its glory) is best observed from October to January.
You can see such a phenomenon of nature in the polar regions of the northern countries.
- Norway. In addition to the northern lights, there is another unique phenomenon - daylight saturated blue color.
- Iceland. True, in the cities it is very difficult to see the aurora, most often it can be seen outside the settlements.
- Finland (northern regions). In this country, a fairly small level of air pollution, so the northern lights there can be seen 200 times a year.
- Russia. In our country, such a phenomenon is observed in Yakutsk, Murmansk, Salekhard, on Taimyr and in other most northern areas.
- Alaska.
- Sweden (Kiruna).
- Greenland (southern part).
The phenomena of nature are truly amazing!Northern lights fascinates with its beauty millions of people. Many dream to see this amazing phenomenon with their own eyes. Anyone who has ever witnessed this miracle of our planet will never be able to forget it.
