Archimedes
,
Archimedis De iis qvae vehvntvr in aqva libri dvo
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DE CENTRO GRAVIT. SOLID.
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">Cuiuslibet pyramidis, & </
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coni portionis, centrum grauitatis in axe cõſiſtit.</
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<
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</
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fieri poteſt, ſit centrum f: </
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">& </
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<
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">ab f ducatur ad baſim pyrami
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dis linea f g, axi æquidiſtans: </
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">iunctaq; </
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<
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">e g ad latera trian-
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guli a b c producatur in h. </
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">quam uero proportionem ha-
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bet linea h e ad e g, habeat pyramis ad aliud ſolidum, in
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quo K: </
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">in pyramide ſolida figura, & </
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cumſcribatur ex priſmatibus æqualem habentibus altitu-
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dinem, ita ut circumſcripta inſcriptam exuperet magnitu-
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dine, quæ ſolido _k_ ſit minor. </
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">Et quoniam in pyramide pla
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num baſi æquidiſtans ductum ſectionem facit figuram ſi-
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milem ei, quæ eſt baſis; </
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tem: </
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<
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">erit priſmatis s t grauitatis centrũ in linear q; </
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matis u x centrum in linea q p; </
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priſmatis η θ in l_i_nea o n; </
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matis ν π in m l; </
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<
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