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Van Allen Belt picture

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This is a typical frame from the Van Allen Belt program. You are in the northern hemisphere looking down. The Earth is represented by a line along its axis. The charged particle spirals around the lines of magnetic force, and also drifts around the Earth. It is currently at the far right, but we have left its trail showing. This Dataset 2.

Where you see cyan-red the particle is in the foreground. Where you see red-cyan, in that order, the particle is in the background. The Earth's axis looks like an elongated X if you are not wearing '3D' glasses.

The particle is able to approach the Earth near the poles. If it comes too close it will strike the upper atmosphere and take part in an auroral display.



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The picture shown above is 560x420 pixels in size, The small version of it is 214x160 pixels. The expansion factor is about 2.618, or the square of the golden ratio.

The picture was produced on an EGA screen, but you are probably looking at it with VGA. EGA is essential because it has a frame buffer which is not available in VGA if the program is written in QBasic.