What is the northern lights?
Those who have seen the northern lights will never forget this sight. An unstable, iridescent, vibrant aurora is a landmark of the cold edge. As well as the Northern Lights cocktail, where vodka with tangerines peacefully coexists with champagne.
Northern Lights in terms of physics
What is the northern lights? Northern Lights - a glow that can be seen from the ground, due to the interaction of the atmosphere with the solar wind. Surprisingly, there is not only sunlight (the flow of photons), but also the solar wind (the flow of charged particles). Lomonosov also suggested that this is an electrical phenomenon. Subsequently, scientists who put their lives on the study and explanation of the phenomenon, confirmed it. Passing a current through rarefied gases (argon, nitrogen, neon), they saw that each of them glowed differently. It was found that luminescence occurs in the upper part of the atmosphere and is associated with explosions in the sun.
It is characteristic that scientists have proved the existence of this phenomenon on other planets. It is known that the northern lights are on Venus, Jupiter. This was proved with the help of super-power equipment, the so-called extra-atmospheric telescopes.
It is noticed that the most striking effects of such a phenomenon as the northern lights, the video of which is analyzed by scientists afterwards, appear some time after the flares on the Sun. It is these flashes that emit ionized particles (solar wind) that reach the upper layers of the Earth’s atmosphere. You can watch the natural spectacle only at night, the sun is a hindrance.
Although it is easy to see the northern lights from the surface of the earth, this phenomenon is localized extremely high, as already mentioned in the upper (from 60 km and above) layers of the atmosphere. It is assumed that the upper limit of the glow is at an altitude of 900 kilometers from the surface of the planet.
It is also noted that spring, as well as autumn, more often provide an opportunity to contemplate this miracle. The days of the equinox (spring and autumn) can be considered the apogee of flares in the sun.
Where is the northern lights best to see
In Iceland, Norway, Sweden, you can see the northern lights.Photos can not convey all the charm of this extravaganza. It is advisable to look at it in places where there is no civilization, where people did not have time to pile up street lights. Moreover, in Lapland (in some in Finnish villages), in order to look at the northern lights without hindrance, the residents refused to have night lighting.
Almost all travel agencies offer tours to countries where you can see the northern lights. Most recently, it was proved that the aurora in the northern and southern parts of the globe, is surrounded by a ring of 4 thousand in the pole. kilometers And curiously, they are identical, as if mirrored.