Editing Mile (section)

===Ptolemaic mile===
In the 2nd-century, Greco-Roman polymath, [[Ptolemy|Claudius Ptolemy]], of [[Alexandria|Alexandria (Egypt)]], in his [[Almagest]] and [[Geography (Ptolemy)|Geography]], defined a mile as a geographic [[Minute and second of arc|arcminute]] of longitude, of the earths circumference, equivalent to 1:60 of a degree of longitude, or 1:21,600 of the circumference.<ref>{{Cite journal |last=Shcheglov |first=Dmitry A. |date=2017 |title=Eratosthenes’ Contribution to Ptolemy’s Map of the World |url=https://www.jstor.org/stable/48547828 |journal=Imago Mundi |volume=69 |issue=2 |pages=159–175 |issn=0308-5694}}</ref> While his estimation for the circumference of the earth, and therefore the length of a stade, and a mile, from third party observations, principally offered in non-normalised [[Stadion (unit)|station]] (600 Greek feet), Egyptian ''schoinos'', and Persian ''parasang'' were erroneous. As were Ptolomy's assumptions of a customary ''stade'' to be {{sfrac|1|8}} of a ''Roman mile'', {{sfrac|1|30}} of a ''schoinos'' or ''parasang'', {{sfrac|1|500}} of an arc-minute, or ~185 metres,<ref>{{Cite journal |last=Russo |first=Lucio |date=2013-02-06 |title=Ptolemy’s longitudes and Eratosthenes’ measurement of the earth’s circumference |url=http://msp.org/memocs/2013/1-1/p04.xhtml |journal=Mathematics and Mechanics of Complex Systems |language=en |volume=1 |issue=1 |pages=67–79 |doi=10.2140/memocs.2013.1.67 |issn=2325-3444}}</ref><ref>{{Cite book |last=Ptolemy |url=https://books.google.co.uk/books?redir_esc=y&id=A6NtMTVeb2kC&q=score#v=onepage&q=circum&f=false |title=Ptolemy's Geography: An Annotated Translation of the Theoretical Chapters |last2=Berggren |first2=J. Lennart |last3=Jones |first3=Alexander |date=2002-01-15 |publisher=Princeton University Press |isbn=978-0-691-09259-1 |language=en}}</ref> his [[Geographical mile]] is the basis of the current nautical mile, and was adopted by medieval Arab and European cartographers.<ref>{{Cite web |last=Serim |date=2018-07-31 |title=The Arabic Translations of Ptolemy's Almagest |url=https://www.qdl.qa/en/arabic-translations-ptolemys-almagest |access-date=2025-05-28 |website=www.qdl.qa |language=English}}</ref><ref>{{Cite web |title=Maps and Map-making in India {{!}} Al-Idrisi to Ptolemy: Early Maps of India · Online Exhibits |url=https://apps.lib.umich.edu/online-exhibits/exhibits/show/india-maps/early-maps |access-date=2025-05-29 |website=apps.lib.umich.edu}}</ref>