File:EB1911 - Magnetism, Terrestrial - Fig. 4.—Isomagnetics, lines of equal vertical force.jpg

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Isomagnetics, lines of equal vertical force

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English: Isomagnetics, lines of equal vertical force
Date
Source Encyclopædia Britannica (11th ed.), v. 17, 1911, "Magnetism, Terrestrial" article, pp. 358 ff. Modified from https://www.gutenberg.org/files/43060/43060-h/43060-h.htm#ar107
Author Emery Walker

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This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.

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current01:45, 27 December 2020Thumbnail for version as of 01:45, 27 December 20201,075 × 565 (517 KB)DivermanAU (talk | contribs)Uploaded a work by Emery Walker from ''Encyclopædia Britannica'' (11th ed.), v. 17, 1911, "Magnetism, Terrestrial" article, pp. 358 ff. Modified from https://www.gutenberg.org/files/43060/43060-h/43060-h.htm#ar107 with UploadWizard

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