Guevara, Giovanni di
,
In Aristotelis mechanicas commentarii
,
1627
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mus verò C, remi manubrium A, palmula in mari B.
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<
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">Si igitur manubrium A per aerem transferatur in D; vti
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que palmula B transferri non poterit per aquam in E.
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<
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">Quandoquidem non poſſet cum maiori reſiſtentia æquale
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ſpatium pertranſire, quemadmodum eſt ſpatium BE ipſi
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AD. </
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<
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">Quare palmula B retrocedet tantum vſque ad F,
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<
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eritq.
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remus in DF, vbi ſpatium retroceſſionis palmulæ
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conſtituitur minus. </
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<
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">Nam ſi conſiderentur duo trianguli,
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AGD, & BGF; erunt ſimiles ex quarta propoſitione
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ſexti, ac propterea latera vnius, lateribus alterius erunt
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proportionalia: Cumque latus GF minus ſi latere GD,
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etiam latus BF, minus erit latere AD. </
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<
s
id
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">Addit præterea Ariſtoteles, quod inter iſtos duos motus
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contrarios id quod ſtabit, ſeu manebit, erit medium pun
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ctum vbi C, nempe vbi conſtituitur ſcalmus circa quem
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remus conuertitur. </
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<
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id
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N1343F
">Siquidem verè reſpectu manubrij, ac
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palmulæ, tanquam extremorum diametri circulariter du
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ctæ, ſcalmus ipſe tanquam
<
expan
abbr
="
cẽtrum
">centrum</
expan
>
manebit. </
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<
s
id
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N1344C
">Quare ſcalmus
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C nunquam procederet ad partes D, nempe antrorſum,
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niſi commoueretur nauigium, cui eſt affixus, & eo transfer
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retur, vbi remi eſt principium, cum ſemper nauigium per
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impulſum in ipſa remigatione acceptum, ſequatur motum.
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</
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<
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id
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">principij mouentis nempe manubrij à quo fertur antror
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ſum, & ſic impoſito per motum manubrij ab A vſque ad
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D, ſcalmus, qui erat in C, conſtituetur in H, palmula re
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trocedente à B vſque ad F. </
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<
s
id
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">Hæc paucis mutatis, vel adiunctis Ariſtoteles profert,
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quæ ſanè licet probent maius eſſe ſpatium AD, quod ma-</
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