Article ID: CBB324390337

How Was Edmond Halley’s Map of Magnetic Declination (1701) Constructed? (2017)

unapi

Edmond Halley made two scientific voyages in the Atlantic Ocean as captain of the HMS Paramore between 1698 and 1700. Following these voyages he published the first map showing lines of equal magnetic declination in 1701. Halley did not reveal how he constructed the map, however, and it remains unknown. In this study, a construction procedure is hypothesized that uses mathematical tools that were available in his day, namely arithmetical averages and Isaac Newton’s method of divided difference for fitting a polynomial curve to data. To enable his map construction, a method is suggested whereby Halley could have created new data to augment the situations where insufficient data were collected.

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Authors & Contributors
M. Zuhair Nashed
Sybil G. de Clark
Willi Freeden
Gillin, Edward J.
Metcalf, Alida C.
Koot, Christian J.
Journals
Notes and Records: The Royal Society Journal of the History of Science
British Journal for the History of Science
Ziran Kexueshi Yanjiu (Studies in the History of Natural Sciences)
Saber y Tiempo: Revista de Historia de la Ciencia
Mitteilungen, Gauss- Gesellschaft E.V. Göttingen
Isis: International Review Devoted to the History of Science and Its Cultural Influences
Publishers
Yale University Press
Springer
Scarecrow Press
Oxford University Press
New York University Press
McGill-Queen's University Press
Concepts
Scientific expeditions
Maps; atlases
Geomagnetism
Travel; exploration
Magnetism
Cartography
People
Gauss, Carl Friedrich
Herrman, Augustine
Ruyters, Dierick
Neumayer, Georg von
Holland, Samuel
Hell, Maximilian
Time Periods
19th century
18th century
17th century
20th century, early
20th century
16th century
Places
Great Britain
Atlantic Ocean
North America
Atlantic world
Polar regions
Göttingen (Germany)
Institutions
National Maritime Museum (Great Britain)
International Polar Year (1882-1883)
Observatorio Astronómico Nacional de Chile
Great Britain. Royal Navy
American Philosophical Society
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