Aurora borealis or northern lights ,Lyngen Alps, North Norway
by Neale And Judith Clark
Title
Aurora borealis or northern lights ,Lyngen Alps, North Norway
Artist
Neale And Judith Clark
Medium
Photograph - Photography
Description
Northern Lights - The green lights of the Aurora borealis or Northern Lights seen over the Lyngen Alps and Ullsfjord, Troms, North Norway,EU, Europe
An aurora sometimes referred to as polar lights (aurora polaris), northern lights (aurora borealis), or southern lights (aurora australis), is a natural light display in the Earth's sky, predominantly seen in high-latitude regions (around the Arctic and Antarctic).
Auroras are the result of disturbances in the magnetosphere caused by solar wind.
In northern latitudes, the effect is known as the aurora borealis or the northern lights. The former term was coined by Galileo in 1619, from the Roman goddess of the dawn and the Greek name for the north wind.
Auroras result from emissions of photons in the Earth's upper atmosphere, above 80 km (50 mi), from ionized nitrogen atoms regaining an electron, and oxygen atoms and nitrogen based molecules returning from an excited state to ground state. They are ionized or excited by the collision of particles precipitated into the atmosphere. Both incoming electrons and protons may be involved. Excitation energy is lost within the atmosphere by the emission of a photon, or by collision with another atom or molecule:
oxygen emissions - green or orange-red, depending on the amount of energy absorbed.
nitrogen emissions - blue, purple or red; blue and purple if the molecule regains an electron after it has been ionized, red if returning to ground state from an excited state.
The Lyngen Alps are a mountain range in northeastern Troms og Finnmark county in Norway, east of the city of Tromsø. The mountain range runs through the municipalities of Lyngen, Balsfjord, and Storfjord. The mountains follow the western shore of the Lyngen fjord in a north-south direction.
Alamy reference CFRDGG
Uploaded
January 9th, 2020
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