Principal facts of the earth's magnetism and methods of determining the true meridian and the magnetic declination. Reprinted from the United States magnetic declination tables and isogonic charts for 1902 (1909)
U.S. Coast and Geodetic Survey · Washington Govt. Print. Off · leaf 61
reaterpart of our observed magnetic storms the causes come from the outside of theEarths crust. MAGNETIC OBSERVATORIES. These institutions are designed especially to secure a record of the changes ever goingon in the magnetic condition of the Earth. It was recognized at an early date that… … PRINCIPAL FACTS OF THE EARTHS MAGNETISM. 57 Under the powerful initiative of von Humboldt, Gauss, Herschell, Kupffer, andSabine, a number of institutions were accordingly established in the fourth decade ofthe last century in different parts of the Earth, whose special purpose it was to recordthe…
Magnetism, Terrestrial
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
