Clavius, Christoph
,
In Sphaeram Ioannis de Sacro Bosco commentarius
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Comment. in I. Cap. Sphæræ
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V X, æqualem habens ſemidiametro ſphæræ N: </
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ter conus O P Q, conſtruatur habens axem Q R, ęqualem ſemidiametro ſphæ
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rę A B C D; </
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<
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">eritq́ue maior altitudo coni S T V, quàm coni O P Q; </
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les erunt. </
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<
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">Quare conus S T V, maior erit cono O P Q, propterea quòd coni
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æqualium baſium eam inter ſe habent proportionem, quàm altitudines,
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Quoniam uero ſphæra N, quadrupla eſt eius coni, qui baſim habet æqualẽ ma
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ximo in ſphæra N, circulo, & </
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">altitudinem æqualem ſemidiametro ſphæræ N,
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ut demonſtrauit Archimedes lib. </
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tem eiu ſdem coni quadruplus eſt conus S T V, eo quòd coni eandem haben-
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tes alt itudinem proportionem habent, quam baſes; </
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<
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">erit conus S T V, ſphęræ
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N, æqualis. </
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">Eodem pacto, quia baſis coni O P Q, æqualis eſt ambitui corporis
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E F G H I K L M, quia & </
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">ęqualis ſuperſiciei ſphæræ N, quæ corpori illi iſo-
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perim etra eſt: </
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<
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">altitudo uero æqualis ſemidiametro ſphæræ A B C D, erit ſo-
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lido E F G H I K L M, æqualis conus O P Q, per ea, quæ Archimedes libro
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1. </
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mai or erit ſolido E F G H I K L M, conicis ſuperficiebus contento. </
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tur omnibus corporibus ſibi iſoperimetris, & </
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">circa alias ſphæras circumſcripti
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bilibus, &</
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ſunt, quæ mihi dicenda uidebantur de figuris Iſoperimetris. </
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ſiorem autem tractationem eadem de re, Deo volente, alio in loco edemus
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Nunc ad propoſitam ſphærę expoſitionem reuertamur.</
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, quoniam ſi mundus eſset alterius formæ, quàm ro-
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ro tundum
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pro batur à
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neceſſitate.</
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tundæ, ſcilicet trilateræ, uel quadrilateræ, uel multilateræ, ſequerentur
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duo impoſſibilia, ſcilicet quòd aliquis locus eſset uacuus, & </
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