Chapters in the history of terrestrial magnetism
Abstract
Chapter III—The discovery of the magnetic inclination1—It has been shown in Chapter II that the literature of the fourteenth century contains references to the fact that the direction of a suspended or pivoted magnetic needle is not, always and everywhere, that of the geographical meridian at the place of observation; that for nearly 200 years the existence of this variation was either denied, or doubted, or ascribed to irregularity in the magnetization of the needle or to faulty methods of observation; but that finally, about the middle of the fifteenth century, it was recognized as a general or world-wide phenomenon. Thus was reached the conception of magnetic declination.
- Publication:
-
Terrestrial Magnetism and Atmospheric Electricity
- Pub Date:
- 1939
- DOI:
- 10.1029/TE044i001p00077
- Bibcode:
- 1939TeMAE..44...77M