Archimedes
,
Archimedis De iis qvae vehvntvr in aqva libri dvo
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extra humidi ſuperficiem, axem habetin perpendiculari
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per _k_: </
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<
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xml:space
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">propter ea, quæ ſuperius dicta ſunt, centrum gra-
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uitatis ipſius eſt in linea n _k_, quod ſitr; </
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<
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tionis centrum grauitatis eſt in linea f t, inter _k_ & </
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ſit x. </
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centrum erit in rectalinea r x producta ad partes x; </
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ſumpta ex ea linea quadam, quæ ad x r eandem habeat pro
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portionem, quam grauitas portionis, quæ eſt extra humi-
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dum, ad grauitatem figuræ, quæ in humido. </
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centrum dictæ figuræ: </
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<
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l o. </
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">Feretur ergo grauitas portionis quidem, quæ eſt ex-
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tra humidum, per rectam r l deorſum; </
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<
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in humido, per rectam o l ſurſum. </
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ra; </
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<
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ad e ſurſum. </
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<
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perpendicularem fiat.</
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axem habet in perpendiculari per _k_.</
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enim b c, quæ ſecet lineam n k in m: </
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n k circunferentiam a b c d ſecet in g. </
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<
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