Borelli, Giovanni Alfonso, De motionibus naturalibus a gravitate pendentibus, 1670

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                <lb/>
              C & proinde pendulum horizontale conſtituat; ta­
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              men aio ipſum retineri ſuſpendique à vi manus, quæ
                <lb/>
              diaphragma FG retinet ne conuertatur à vi ponderis
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              in centro D operantis, non ſecus ac ſi
                <expan abbr="fune-pendulũ">fune-pendulum</expan>
                <lb/>
              aliquod CD à ſubiecta manu ſuſpenſum deorſum fer­
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              ri non poſſet per arcum DE. & licèt fune-pendulum
                <lb/>
              CD in caſu noſtro non ſit quid continuum &
                <expan abbr="alligatũ">alligatum</expan>
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              centro C nihilominus perindè ſe habet, cum eius co­
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              natus fiat per arcum DE eo modo præcisè, ac ſi cen­
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              tro C alligatum fuiſſet; ille verò qui prohibet deſcen­
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              ſum corporis grauis D, quod ſolummodo moueri per
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              arcum DE poteſt, neceſſariò impedit operationem̨
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              eius loco motiuam, ideoque fluidum FAG cum omni­
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              nò quieſcat, non poterit impellere, & conuerterę
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              tympanum; nullo enim modo capi poteſt proiectum
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              impelli ab eo corpore quod omninò in quiete conſi­
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              ſtit, nam ſemper proijciens & impellens impetu &
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              motu locali affectum ſit oportet ad hoc, vt proyecto
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              gradum impetus imprimere valeat, cum igitur hy­
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              drargyrum FAG omninò iners ſit & motu locali care­
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              at, videtur omninò impoſſibile vt proiecto ſcilicet
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              tympano gradum aliquem impetus imprimere queat,
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              proinde que tympanum non transferetur locali motu,
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              quare tali artificio motus vertiginis eius nedum con­
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              tinuari perpetuò non poterit, ſed neque motum in­
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              coabit. </s>
              <s id="s.000077">Sed relicta digreſſione ad rem noſtram redeo. </s>
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