When the Sky Became Green in the Northern Finland

TRENDING NOW

It really is a sparkling multi-colored lights in the sky. Typical aurora looks like a shining curtain , iridescent blue - green lights with splashes of pink and red. These colored linen you have a width of up to 160 kilometers and a length of up to 1,600 kilometers. Dancing in the dark sky as flames, northern lights - a fascinating and enchanting spectacle.

ADVERTISEMENT

Northern Lights takes place in the world. But it is due to processes occurring on the sun. Here's how it turns out. Sun - a red-hot ball of gas composed of hydrogen and helium atoms. At the core of these atoms are particles called protons. Around the spin of protons other particles. They are called electrons. The protons carry a single positive charge, electrons - negative. Over hot gas cloud enveloping the Sun (the corona), constantly emits into space in all directions of the particle and atomic fragments. These pieces flying in space at a speed of 960 kilometers per second. Such flows are called the solar wind. Sometimes crown literally explodes swirl particles, adding new portions to the red-hot solar wind.

ADVERTISEMENT

When the Sky Became Green in the Northern Finland

At the North Pole is the northern lights almost every night


When the solar wind reaches the Earth, the particles fall into its magnetic field. The lines of force of the magnetic field are in space and converge at the North and South poles of the Earth. In short, the Earth - is a giant magnet . Earth magnetism due believed, electric currents induced by the rotation of the Earth's iron core. To see how the magnet is put on him a piece of cardboard on top and sprinkle iron filings or small cloves. Sawdust or nails will be located on curved lines, coinciding with the magnetic field lines. The Earth's magnetic attraction as it sucks flying past her charged particles. These particles are drawn by moving a long "ray" along the magnetic field lines, which go under the ground in the area of ​​the magnetic poles. These poles are located near the Earth's North and South poles, though not coincide with them. Flying along invisible lines of force "unceremoniously dragged" particles in the atmosphere near the poles. And then - it all starts.

Earth - not the only planet where there is the aurora. On Jupiter, the sky near the North Pole blaze even grander


The atmosphere of our mother Earth is composed mainly of nitrogen and oxygen. When electrons and protons ejected from the Sun, invade the atmosphere, they will inevitably collide with the molecules of these gases. In a collision of some atoms lose some of their electrons, while others - "excited" to give extra energy. When an atom is "calm down" after such a violent attack, that is, returns to normal energy state, it emits a photon of light. The molecules of nitrogen in a collision usually lose electrons. At the same time radiates blue and violet light. If the nitrogen molecule is excited without the loss of an electron, then the emission of rays of the red part of the spectrum. When the solar wind collides with oxygen molecules, loss of electrons never occur. Excited molecule then emits photons of green and red light.

Charged particles of the Sun cause the Earth's atmosphere air sparkle with different colors it is the aurora


At the North Pole is the northern lights almost every night , in Scandinavia and North America - from 20 to 200 times a year. Five - ten times a year on the aurora is latitude of Paris and London. Once the aurora seen even in Mexico.

ADVERTISEMENT

скачать dle 11.1смотреть фильмы бесплатно