Lier, Drammen | Rare phenomenon over the Drammen district
Northern lights are a light phenomenon that occurs when energy rich particles is thrown from The sun against Earth. It occurs in the upper polar the atmospherebetween 80 kilometers and rarely over 500 kilometers above the earth’s surface when electrons and protons collides with the atmospheric gas. This gas is supplied energy which is then sent out again in the form of light. The light emission itself mainly comes from atoms and molecules in the atmosphere and not from the primary particles themselves.
The Northern Lights appear in many different forms. The colors in the northern lights are one line spectrum which covers the entire area ultraviolet to infrared. The colors and conditions of the northern lights are determined by the energy level of the particles and the composition of the atmospheric gas. The dominant colors in the part of the color spectrum we can see are green, Red and blue. Occurrence and intensity of the northern lights are, in turn, controlled by activity The sun. Earth’s magnetic felt and atmosphere determine where on Earth the northern lights appear.
The Latin name for northern lights is northern Light. The same light phenomenon is called sunlightor aurora australis when it appears on the southern hemisphereand a common term for both is polar lights..
Source: Great Norwegian Lexicon