Fabri, Honoré, Tractatus physicus de motu locali, 1646

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              tùm in perfectione illius, qui producitur per AB; ſi enim æqualis perfe­
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              ctionis; </s>
              <s id="N1ECB7">igitur impetus poſt deſcenſum per AC eſſet duplus illius qui ha­
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              betur in B poſt deſcenſum per AB; </s>
              <s id="N1ECBD">ſi autem eſſet minor ſubduplo; </s>
              <s id="N1ECC1">igitur
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              in C, vel impetus eſſet minor quam in B contra hypotheſim; </s>
              <s id="N1ECC7">igitur debet
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              ſubduplus; </s>
              <s id="N1ECCD">igitur duplò plures ſunt gradus impetus in C quàm in B, cùm
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              ſcilicet ſinguli gradus impetus in B æquiualeant duobus impetus in A:
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              his adde aliqua breuia Corollaria, quæ quiſque ex dictis facilè colligere
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              poterit. </s>
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              Corollarium
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              1.
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              </s>
            </p>
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              <s id="N1ECE8">Ex his primò vides perfectam analogiam impetus in omni motu, qui
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              reuera explicari non poteſt, niſi detur impetus alio imperfectior: </s>
              <s id="N1ECEE">Porrò
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              multa hîc deſiderantur, quæ ad motum in planis inclinatis pertinent, que
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              in Tomum ſequentem remittimus; quia potiori iure ad Mathematicam
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              ſpectant, quàm ad Phyſicam. </s>
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              Corollarium
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              2.
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              </s>
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              <s id="N1ED09">Secundò, impetus poſſe in infinitum decreſcere perfectionem quod
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              primò conſtat ex eo, quòd infra horizontalem poſſint duci lineæ minùs
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              & minùs inclinatæ: ſecundò ex eo, quòd poſſint inter quamlibet inclina­
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              tam deorſum rectam, & ſuperficiem orbis terræ deſcribi infiniti orbes,
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              quorum centrum ſit ſupra centrum terræ, quorum arcus initio faciunt
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              minorem, & minorem inclinationem. </s>
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              Corollarium
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              3.
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              </s>
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              <s id="N1ED28">Tertiò, hinc colliges impetum qui producitur in primo puncto deſ­
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              cenſus illorum arcuum eſſe prorſus alogum cum illo, qui producitur in
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              primo puncto deſcenſus cuiuſlibet rectæ inclinatæ, & illum qui à pro­
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              ximo puncto verſus punctum contactus in Tangente producitur
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              eſſe etiam alogum cum illo, qui in proximo puncto verſus idem pun­
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              ctum contactus producitur in circumferentia circuli, cuius centrum ſit
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              infra centrum terræ, id eſt cuius radius ſit longior radio orbis terræ, </s>
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              Corollarium.
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              4.
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              </s>
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            <p id="N1ED46" type="main">
              <s id="N1ED48">Quartò, quid mirabilius quam ad idem punctum contactus poſſe du­
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              ci infinitos circulos quorum arcus omnes in eaſdem partes incuruan­
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              tur, licèt ſint infiniti? </s>
              <s id="N1ED4F">quia ſumpto termino in eodem puncto contactus
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              omninò aſcendant ſcilicet ij, qui maiores ſunt orbe terræ, & infiniti, qui
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              deſcendunt, ij ſcilicet qui minores ſunt; & vnicus tantùm medius, qui
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              nec aſcendat nec deſcendat, qui eſt orbis terræ. </s>
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              Corollarium
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              5.
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              </s>
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              <s id="N1ED6A">Quintò, non poſſe faciliùs globum moueri, quàm in ſuperficie terræ,
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              ſi probè læuigata eſſet; </s>
              <s id="N1ED70">nullum enim eſt planum ſupra ſiue rectum, ſiue
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              curuum, quod non aſcendat; </s>
              <s id="N1ED76">nullum infrà quod non deſcendat: hinc mo­
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              tus eſſet æquabilis. </s>
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