Zar je onda postojao kompas?neko iz mase wrote:Jos jedna mala informacija za neupucene, sjeverni magnetni pol je u kretanju, tj nije fiksan. To znaci da strane piramide ne moraju biti u pravcima danasnjeg magnetnog polja
http://en.wikipedia.org/wiki/North_poleThe third observation of Magnetic North was by Canadian government scientists Paul Serson and Jack Clark, of the Dominion Astrophysical Observatory, who found the pole at Allen Lake on Prince of Wales Island. The Canadian government has made several measurements since, which show that Magnetic North is continually moving northwest. Its location (in 2003) is 78°18' North, 104° West, near Ellef Ringnes Island, one of the Queen Elizabeth Islands, in Canada. During the 20th century it has moved 1100 km, and since 1970 its rate of motion has accelerated from 9 km/a to 41 km/a (2001-2003 average; see also Polar drift). If it maintains its present speed and direction it will reach Siberia in about 50 years, but it is expected to veer from its present course and slow down.
Ili su i po tome Prailiri bili jedinstveni?
