Wednesday, March 23, 2011

The Aurora

As amateur radio operators we are aware, more then most, of the constantly changing environment of charged particles above our heads. The way radio signals bounce off the ionosphere allows our relatively low power transmissions to skip across huge distances, sometimes completely around the world if the ionospheric conditions are right.
To the layperson this is sometimes hard to visualize but the video below shows spectacularly the result of charged particles that are ejected by the sun, interacting with the geomagnetic field that shields the Earth.

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