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This article should probably be renamed to Campanus of Novara as cited in sources, with the qualification "Campanus is sometimes given the forename Johannes, but that name receives no confirmation in the manuscripts of his works..." Benjamin and Toomer (1971) Also, I question Clockmakers' Gallery as a
WP:RS. --
mikeutalk18:17, 2 March 2011 (UTC)reply
In a section titled "The eastern origins of the Campanus (Prime Vertical) method. Evidence from al-Bīrūnī" it is given: "Where did the method originate? I can only say that it was known in Europe before Campanus, and that when it was mentioned yet earlier by
al-Bīrūnī in the Masudic Canon, there was no claim to originality implied." [1] Given that the method is attested to some two centuries before the time of Campanus, it would seem that he could not have invented the horoscope house system that is named for him. --
mikeutalk02:29, 4 March 2011 (UTC)reply
^North, John David (1986). Horoscopes and history. The Warburg Institute, University of London. pp. 175–176. ISBN:978-0854810680. {{
cite book}}: Cite has empty unknown parameters: |accessmonth=, |month=, |chapterurl=, |origdate=, and |coauthors= (
help)
His De computo ecclesiastico or Computus maior (ca. 1261 – ca. 1264) was written by Campanus for
Pope Urban VI does not make any reference to a
mechanical clock, thereby leading historians to believe that the clock was not invented until 1280 or so.
[1]