Concept
Geomagnetism - Early works to 1800
Catalogue
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A treatise on magnetism, with a description and explanation of a meridional and azimuth compass, for ascertaining the quantity of variation, without any calculation whatever, at any time of the day. Also improvements upon compasses in general. With Tables of Variation, for all Latitudes and Longitudes. By Ralph Walker, of Jamaica.
Walker, Ralph.Date: 1794- Books
- Online
The newe attractive, shewing the nature, propertie, and manifold vertues of the loadstone; with the declination of the needle, touched therewith, under the plaine of the horizon. Found out and discovered by Robert Norman
Norman, Robert, active 1590.Date: Reprinted in the Year MDCCXX. [1720]- Books
- Online
The magnetic atlas, or Variation charts of the whole terraqueous globe; comprising a system of the variation & dip of the needle by which the observations being truly made, the longitude may be ascertained. By John Churchman, Fellow of the Russian Imperial Academy.
Churchman, John, 1753-1805.Date: 1800