Apian, Peter, 1495-1552, Ptolemy, active 2nd century, Gherardo, da Cremona, 1113 or 1114-1187, Geber, active 13th century. De astronomia libri IX, Duhem, Pierre Maurice Marie, 1861-1916. fmo RIBRL · Norimbergae : Apud Io. Petreium · leaf 120
ma gnorum,& angulus m eius eft redus,ergo proportio finus com plementi lateris e k noti ad finum coplementi lateris em, eft (i* cut proportio finus complementi lateris k m noti ad finu quar* tae circuli.Eft ergo propter illud finus complementi lateris ar* cus e m notus, & eft minor quarta… … Et fi fuerit de fignis meridianis/aciemus contrariu illius,icilicet , minuemus illud ex 1 y* gradibus ad horas diurna s,5C addemus illud ad horas nodurnas, & quod fuerigerit nume rus partifi horae temporalis quaefitae.Et fimiliter cum ponit numerus horapj temporalis, & uolumus fcire quantus numerus…
Mathematics · Astronomy · Astronomy, Arab · Astronomical instruments · Spherical astronomy · Scientific apparatus and instruments · Imprint 1534
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