2016-04-28T12:47:13Z
2016-04-28T12:47:13Z
2001
2016-04-28T12:47:18Z
The aim of trepidation models was to account for two phenomena that puzzled medieval astronomers: the secular decrease of the obliquity of the ecliptic, and the apparent changes in the velocity of precession over the years.
Artículo
Versión publicada
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Astronomia àrab; Astronomia antiga; Astronomia medieval; Arab astronomy; Ancient astronomy; Medieval astronomy
Universitat de Barcelona
Reproducció del document publicat a: http://www.raco.cat/index.php/Suhayl/article/view/199592
Suhayl. Journal for the History of the Exact and Natural Sciences in Islam, 2001, vol. 2, p. 291-408
cc-by-nc-nd (c) Comes, Mercè (Comes Maymó), 1949-2010, 2001
http://creativecommons.org/licenses/by-nc-nd/3.0/es