Based on Joe's post below and other ones earlier shall we conclude that we still do not have the answer to the above question (in the subject)?
Again, I launch the question what would prevent us from defining a specific diameter for purposes of navigation and cartography at some 560 m below sea level and use the principle of "relative" altitudes and all (like we already do with atmospheric pressure) to get rid of the nautical mile crap? Marcus >>J. F. Hayford reported to the International Geodetic and Geophysical Union >>in 1926 that; >> Equatorial circumference of the earth = 40 076.594 km, >> Polar circumference of the earth = 39 941.028 km. >>My source does not state whether these figures are for sea level, as seems >>likely, or if they take account of land and mountains. However, the >>uncertainty in the radius of the earth can not exceed 50 metres. That is, >>the uncertainty is only one part in 100 000. >> >>Joseph B.Reid... Is your boss reading your email? ....Probably Keep your messages private by using Lycos Mail. Sign up today at http://mail.lycos.com
