Diagram of magnetic poles of the Earth
Date
1684
Object type
Archive reference number
Manuscript page number
p298
Material
Dimensions
height (page): 312mm
width (page): 199mm
width (page): 199mm
Subject
Description
A figure from a letter from Johann Christoph Sturmius (1635-1702), Professor of Mathematics at the University of Altdorf, to Theodore Haak concerning Edmond Halley's hypothesis of the magnetic poles of the Earth.
Object history
At the meeting of the Royal Society on 26 November 1684, ‘There was part of a letter of professor John Christopher Sturmius to Mr. Haak concerning Mr. Halley’s hypothesis of four magnetical poles of the globe of the earth, which he explained, as if the influxes at the north and south poles met in the earth like two contrary winds, whereby each influx is divided into two branches’ (Birch, 4:333).
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Associated place