http://demonstrations.wolfram.com/WristwatchAsACompass/
The Wolfram Demonstrations Project contains thousands of free interactive visualizations, with new entries added daily.
You can use an analog wristwatch to locate the direction of south during daylight hours. It is assumed that you live in the Northern Hemisphere, not too close to the Equator or the North Pole. (In the Southern Hemisphere, the same procedure locates nort...
Contributed by: S. M. Blinder
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