Andrew Janssen wrote: > Jefferson wrote: > >>Also, taking the world's curvature into account, each of your observers and >>mirrors would need to be a minimum of 1380 feet above sea level. > > Where on earth do you get that figure from? http://www.boatsafe.com/kids/distance.htm calculating for a horizon at 50 miles. Jefferson http://www.picotech.net/~jeff_wilson63/rpg/ ---------------------------------------------------------------- To unsubscribe, send mail to celandra-off@phoenyx.net.
