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AURORA AUSTRALIS

Satelitski snimak Aurore Australis.



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The Aurora Australis is caused by plasma particles from the sun (part of the solar wind) which enter the atmosphere.

Collisions between the electrically charged particles and Earth's magnetic field ionize oxygen and nitrogen atoms, releasing light.

Blue and purplish-red light comes from ionized nitrogen molecules, green from oxygen molecules.

During periods of high activity, a single auroral storm can produce one trillion watts of electricity with a current of one million amps.




Post je objavljen 20.08.2006. u 20:34 sati.