Ghetaldi, Marino
,
Marini Ghetaldi Promotvs Archimedis sev de varijs corporum generibus grauitate & magnitudine comparatis
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argentei 54 {22/57}, quare corpus aureum ad corpus argenteum eiuſdem
<
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magnitudinis, rationem babebit in grauitate, vt 100, ad 54 {22/57}.</
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<
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xml:space
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">Quæro, quomodo ſe babet in grauitate aqua ad vinum quoniam
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aqua grauior est vino, intelligatur eius grauitas 100, & </
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<
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linea aquæ, ſub titulo vini, datur vini grauitas 98 {1/3}, aqua ad vinum
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ſe babebit in gran
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itate, vt 100, ad 98 {1/3}.</
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<
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xml:space
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aurum. </
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tudinem babere
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100, & </
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<
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xml:space
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">in linea auri, ſub titulo argenti, quæratur auri magnitudo, ea
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erit 54 {22/57}, argentum igit
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r ad aurum ſe babebit in magnitudine, vt
<
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/>
100, ad 54 {22/57}, ſi enim ſumantur duo corpora æque grauia, vnum
<
lb
/>
argenteum, alterum aureum, ſit autem argentei corporis magnitudo
<
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/>
100, erit aurei 54 {22/57}, quare corpus argenteum, ad corpus aureum
<
lb
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eiuſdem grauitatis, ſe babebit in magnitudine, vt 100, ad 54 {22/57}.</
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<
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xml:space
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gentum viuum. </
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<
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xml:space
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">quoniam aqua leuior est argento viuo, intelligatur
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eius magnitudo 100, & </
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ratur argenti viui magnitudo, & </
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">reperietur 7 {7/19}, aqua igitur ad
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argentum viuum ſe babebit in magnitudine, vt 100, ad 7 {7/19}.</
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xml:space
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tes, ex data diametrorum magnitudine, cuius hæc eſt
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explicatio.</
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<
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quo, cuius menſuram in margine appoſuimus, eaque reſpondet ad Ro-
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mani palmi, quo bodie vtimur, menſuram vt 4, ad 3, buiuſmodi pe-
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dem diuidimus in duodecim partes æquales, ſeu vncias, quas inuenies
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in prima Columna ſub titulo magnitudinis.</
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<
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enim diuidimus in 12, vncias vnciam vero in 24, ſcrupula, & </
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pulum in 24, grana. </
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<
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xml:space
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">Ad inueniendas igitur ſpbærarum grauitates ex
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data diametrorum magnitudine, bæc eritratio.</
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<
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">Quæris grauitatem ſphæræ plumbeæ, diametrum babentis 3, vn-
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ci
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arum, inſpice tabulam, & </
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xml:space
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uitatis plumbeæ ſphæræ, deprebendes ipſam ſphæram grauitatem ba-
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bere lib. </
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/37}.</
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vnciarum. </
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