On Tue, 18 Jan 2011, Tom Laidlaw wrote: > Sorry about that, 400 gradients in a circle by British military.
Grads originated in the French Revolutionary metrication project. Centigrads correspond to kilometers because in both cases there are 10,000 between a pole and the equator. There is a similar correspondence between nautical miles and arc seconds. Tony. -- f.anthony.n.finch <[email protected]> http://dotat.at/ HUMBER THAMES DOVER WIGHT PORTLAND: NORTH BACKING WEST OR NORTHWEST, 5 TO 7, DECREASING 4 OR 5, OCCASIONALLY 6 LATER IN HUMBER AND THAMES. MODERATE OR ROUGH. RAIN THEN FAIR. GOOD. --------------------------------------------------- https://lists.uni-koeln.de/mailman/listinfo/sundial
