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Ioannis Taisnier Hannonij De vsu annuli sphaerici libri tres : in quibus quicquid ad geometriae perfectionem requiritur continetur (1550)

Taisnier, Jean, 1508-approximately 1562 · Panhormi [Palermo] : Apud Sanctum Dominicu[m] · leaf 47

An illustration from Ioannis Taisnier Hannonij De vsu annuli sphaerici libri tres : in quibus quicquid ad geometriae perfectionem requiritur continetur, 1550, leaf 47
hora inaqualis temporis prafiniti , tdipfum in horis fit noflurnis , fubduc ta enim.quantitate diei ex xxiij. horis,, relinquitur quantitas noflis, qua in xj diuifdj quantitatem imius hora inaquatis relinquet, tandem diuidatur tempus elapfum ab oes cafu folisper quantitatem hora illius, exibit hora… … extremam lineam unitate de fignatam dirrigatur, deinde hora officio annuli co gnita filis apponatur gemma indicabit horam inaqualem fiue plane tari a diei propofiti. rj 0 Planetum

Surveying · Geometry · Astronomy

Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.

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