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On the Geometrical Term Radius in Ancient Latin
Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Languages, Department of Linguistics and Philology.
2013 (English)In: Philologus (Berlin), ISSN 0031-7985, E-ISSN 2196-7008, Vol. 157, no 1, 141-153 p.Article in journal (Refereed) Published
Abstract [en]

According to major Latin dictionaries, the word radius is attested as a terminus technicus for the geometrical concept 'radius' in Cicero's Timaeus 17. In this study, however, it is argued that there is good reason to believe that Cicero did not use the word in this sense, but in a metaphorical expression, in which radius mainly carries the well-attested sense of 'rod (for drawing diagrams, etc.)': paribus radiis attingi literally = 'to be touched by equal rods', that is to say, 'to be equidistant'. The first and only convincing attestation of radius in the sense of 'radius (of a circle, sphere, etc.)' in ancient Latin literature is found in Calcidius' Commentary on the Timaeus 59. It is suggested that Calcidius was influenced by Cicero's translation and consequently adopted the word radius; however, its technical sense of 'radius' was coined, deliberately or not, by Calcidius himself. As there are no other convincing attestations of this sense of the word in ancient Latin, not even in geometrical texts, it is suggested that the word radius never became a commonly accepted terminus technicus for radius in antiquity.

Place, publisher, year, edition, pages
2013. Vol. 157, no 1, 141-153 p.
Keyword [en]
radius, geometry, Timaeus, Cicero, Calcidius
National Category
Humanities
Identifiers
URN: urn:nbn:se:uu:diva-206679DOI: 10.1524/phil.2013.0011ISI: 000322287200011OAI: oai:DiVA.org:uu-206679DiVA: diva2:645018
Available from: 2013-09-03 Created: 2013-09-02 Last updated: 2017-12-06Bibliographically approved

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Bohlin, Erik

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