Clavius, Christoph
,
In Sphaeram Ioannis de Sacro Bosco commentarius
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Ioan. de Sacro Boſco.
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æqualiter à mundi centro remouentur, qualis eſt ſuperficies extima aquę ubi
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cunq. </
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<
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">collocetur, cuiuſmodi non poteſt eſſe ſuperficies rectilinea, ſeu plan@.
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<
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tro mundi pluri
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mę lineæ rectæ
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ad ipſam proten
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dãtur, omnium
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minima erit ea,
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quæ perpendicu
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laris exiſtit ad
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ſuperficiem: </
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<
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quę vero, quo a perpendiculari remotiores fuerint, eo quoq. </
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<
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">longiores erunt,
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ut in hac figura cernis, facileq́. </
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<
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">probari poteſt ex propoſ. </
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<
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<
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obrem punctum illud in plano, in quod perpendicularis cadit, centro erit pro-
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ximum, ac proinde infimum: </
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<
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xml:space
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">Reliqua uero puncta plani à centro erunt remo
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tiora, ac propterea altiora, ita ut extrema plani ſint altiſſima, cœloq. </
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<
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ma. </
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<
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">Quocirca ſi aliquis in illo plano incederet circa punctum centro proximũ
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putaret ſe omnino deambulare in librato, quippe cum nihil ſentiret accliuit@
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ti@ in tam paruo ſpatio, cum tamen uere modo aſcenderet, modo deſcenderet,
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adeo ut quo magis inde receſſerit, eo accliuius aſcenderet, donec tandem ere
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ctio ei negaret aſcenſum, ut luce clarius in propoſita figura deprehendi poteſt.
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</
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<
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">Hinc etiam fit, ut ſi quiſpiam in pauimento aliquo librato, qualis eſt ſuperſi-
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cies terræ, uel aquę, obambulet, caput illius uelocius feratur, quam medię cor
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poris partes; </
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<
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">quoniam nimirum eodem tempore tam caput, quàm mediæ cor-
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poris partes, portionem circuli deſcribunt, cuius centrum idem eſt, quod terrę: </
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Clarum autem eft, caput maiorem circulum deſcribere, cum magis à centro
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diſter, quam medias corporis partes, cum uiciniores centro exiftant.</
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">Plus aquæ
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contine@i
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in uaſe ad
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radices mõ
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tis, quami@
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cacumine.</
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<
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quoq.
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<
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number
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xlink:href
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http://echo.mpiwg-berlin.mpg.de/zogilib?fn=/permanent/library/xxxxxxxx/figures/169-02
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ex dictis relinquitur, uas
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quodcunque plus aquę reci
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pere in loco inferiori poſi-
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tũ, quàm in ſuperiori, ut v.
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</
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<
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">g. </
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<
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">ad radices montis altiſſi-
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mi, quàm in cacumine. </
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<
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enim, ut ſupra oſtendimus,
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quælibet pars aquæ quieſcẽ
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tis, in quocunq. </
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<
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xml:space
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">loco conti-
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neatur, iaceat librata, pro-
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pterea quòd ſuapte natura
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ad decliuiora loca confluat,
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efficiatq́. </
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<
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">ſphęricam ſuperſi-
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ciẽ, cuius centrum eſt cẽtrũ
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mũdi, luce clarius eſt, ſuper-
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ficiẽ aquæ, quo uicinior cen
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tro fuerit, eò minorẽ effice-
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re ſphæram, cũ minorẽ poſ-
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ſideat diametrum. </
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uero una eademq́. </
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