Baliani, Giovanni Battista, De motu naturali gravium solidorum, 1638

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              <s id="s.000269">PROPOSITIO XXII.
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                <s id="s.000270">Si duo gravia descendunt alterum quidem perpendicu-
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                lariter, alterum vero super plano declinante, perve-
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                niunt ad idem planum Orizontale tali ratione, ut sit
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                eadem proportio inter diuturnitates eorum, quae in-
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                ter perpendicularem, & declinantem.
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                </s>
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            <p>
              <s id="s.000271">Sit linea AB perpendiculariter erecta super plano Ori-
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              zontali BC, & AC planum declinans.
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              </s>
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              <s id="s.000272">Dico quod diuturnitates gravium descendentium per AB, &
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              per AC, sunt ut AB ad AC.
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              </s>
            </p>
            <p>
              <s id="s.000273">Ducatur BD normalis ad AC.
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              <s id="s.000274">Quoniam est ut AD ad AC ita quadratum temporis AD
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              ad quadratum temporis AC
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              , & tempora AD, & AB
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              sunt aequalia
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              , & proinde eorum quadrata
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              , ergo ut A
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              D, ad AC ita quadratum temporis AB ad quadratum tem-
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              poris AC, sed ut AD ad AC ita quadratum AB ad qua-
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              dratum AC
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              , ergo ut quadratum temporis AB ad qua-
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              dratum temporis AC, ita quadratum AB ad quadratum
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              AC
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              , sed quia latera sunt inter se ut eorum quadrata
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              , est
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              ut AB ad AC ita tempus AB ad tempus AC. </s>
              <s id="s.000275">Quod, &c.
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              7. hujus.
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              hujus.
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              pron.
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              Sexti.
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              Quinti.
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