Schott, Gaspar, Mechanica hydraulico-pneumatica. Pars I. Mechanicae Hydraulico-pnevmaticae Theoriam continet. , 1657
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              Salientium|
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              proportio ad
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              duos tubos.
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              <s>Sint igitur in præcedenti ſchemate duo tubi, BL pedalis,
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              & BA quadrupedalis; ſithorizon OHG; ſitque tubi pedalis BL
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              ſaliens horizontalis CH, tubi verò quadrupedalis BA ſaliens
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              horizontalis ſit CG. </s>
              <s>Dico, longitudinem ſalientis tubi BL
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              pedalis, ſcilicet CH, eſſe ſubduplam ſalientis tubi BA, ſcilicet
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              CG. </s>
              <s>Obſerva vit id Merſennus, ut aſſerit ipſe in ſuis Phænome­
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              nis hydraulicis Propoſit. XVI. </s>
              <s>Quare, ſi longitudo ſalientis tu­
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              bi pedalis eſt unius pedis, longitudo ſalientis tubi quadrupedalis
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              erit duorum pedum; & longitudo ſalientis tubi ſexde cupedalis
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              erit quatuor pedum; & longitudo ſalientistubi 64 pedum erit
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              octo pedum; & ita de reliquis. </s>
              <s>Ratio huius Phænomeni vide­
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              tur deſumenda eſſe à velocitate aquæ deſcendentis per tubos,
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              quæ etiam eſt in ratione tuborum ſubduplicata, ut conſtat ex
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              Propoſit. X. Capitis præcedentis. </s>
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              Poriſma.
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              <s>SEquitur hinc, altitudines tuborum habere duplicatam ratio­
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              nem eius, quam habent longitudines ſalientium horizonta­
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              lium. </s>
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              Annotatio I.
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              QVod dixi in Propoſitione de ſalientibus horizontalibus
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              CG, CH,
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              debet etiam intelligi de ſalientibus medijs
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              DK, DI. </s>
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              Annotatio II.
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              Salientium
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              longitudines
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              obſervare.
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              LOngitudines ſælientium ſuper horizontem quemcun〈qué〉 poteſt quilibet
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              obſervare facillimè, & ubivis locorum, ſiconficiat ſibi tubulum
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              præcedentis figuræ
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              ABC
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              portatilem, determinatæ altitudinis & lati­
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              tudinis, v.g. altumpede vno, & latum digito. </s>
              <s>Si enim apud
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              C
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              epiſto­
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              mium inſerat, aut etiam ſolum digitum apponat foramini
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              C,
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              & de­
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              inde repleto tubo epiſtomium aperiat, aut digitum amoveat, ut paucu­
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              læ ſolùm guttulæ exiliant, iterumque obturet foramen; notare poterit
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              in horizonte ſignum à ſaliente impreſſum; cuiusmodi ſigna
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              ſunt in ſuperiori ſchemate
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              K, I, H, G, &C. </s>
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