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Illustration
A detail of a chart showing lines of magnetic compass variation made in 1702 by the English scientist and cartographer Edmond Halley (1656-1742). Halley hoped the chart would aid navigation but the variations in magnetism over time made it useless. (Greenwich Museums, London)
License & Copyright
Based on Wikipedia content that has been reviewed, edited, and republished.
Original image by Edmond Halley. Uploaded by Mark Cartwright, published on 28 September 2023. The copyright holder has published this content under the following license: Public Domain. This item is in the public domain, and can be used, copied, and modified without any restrictions. Please note that content linked from this page may have different licensing terms.
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Cite This Work
APA Style
Halley, E. (2023, September 28). Magnetic Sea Chart by Halley. World History Encyclopedia. Retrieved from https://www.worldhistory.org/image/17954/magnetic-sea-chart-by-halley/
Chicago Style
Halley, Edmond. "Magnetic Sea Chart by Halley." World History Encyclopedia. Last modified September 28, 2023. https://www.worldhistory.org/image/17954/magnetic-sea-chart-by-halley/.
MLA Style
Halley, Edmond. "Magnetic Sea Chart by Halley." World History Encyclopedia. World History Encyclopedia, 28 Sep 2023. Web. 27 Jul 2024.
