Aurora Borealis, also known as the Northern Lights, is a natural light
phenomenon visible in northern latitudes. The name is derived from the
Roman goddess of dawn, Aurora, and the Greek name for north wind,
Boreas. The display occurs when solar winds move away from the sun and
interact with charged electric and magnetic fields in the earth’s
magnetized stratosphere. As charged particles enter the atmosphere 20 to
200 miles above the earth, they clash with oxygen and nitrogen atoms. A
collision with oxygen produces reds and greens, while encountering
nitrogen creates hues of blue to purple. Wind currents affect the
reaction and cause various wave like patterns.
Saturday, 6 April 2013
Aurora Borealis
Aurora Borealis, also known as the Northern Lights, is a natural light
phenomenon visible in northern latitudes. The name is derived from the
Roman goddess of dawn, Aurora, and the Greek name for north wind,
Boreas. The display occurs when solar winds move away from the sun and
interact with charged electric and magnetic fields in the earth’s
magnetized stratosphere. As charged particles enter the atmosphere 20 to
200 miles above the earth, they clash with oxygen and nitrogen atoms. A
collision with oxygen produces reds and greens, while encountering
nitrogen creates hues of blue to purple. Wind currents affect the
reaction and cause various wave like patterns.
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