Fabri, Honoré, Tractatus physicus de motu locali, 1646

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                <pb pagenum="192" xlink:href="026/01/224.jpg"/>
              tangens eſt mixta ex inclinata deorſum ex horizontali verſus Boream,
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              ſit enim AC verſus Boream, AB verſus Ortum, AD inclinata deor­
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              ſum ſub horizontali AB, AG quæ eſt in eodem plano cum AD DG,
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              mixta ex AD, & AC; </s>
              <s id="N1C7B8">aſſumatur EF æqualis ſpatio, quod conficitur
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              motu naturali eo tempore, quo conficitur AE, & GH æqualis ſpatio,
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              quod conficitur motu naturali eo tempore, quo percurritur AG; </s>
              <s id="N1C7C0">duca­
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              tur curua AFH, cuius ſitus vt habeatur ſit AB verſus Ortum, ex qua
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              pendeat perpendiculariter deorſum triangulum ABH, tùm circa axem
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              AD voluatur triangulum ADH, donec HD ſit parallela horizonti; </s>
              <s id="N1C7CA">tùm
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              circa axem AG voluatur triangulum AGH, dum GH ſit perpendicu­
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              laris deorſum, tunc enim linea motus AFH habebit proprium ſitum;
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              idem fiet ſi proiiciatur per inclinatam deorſum verſus Occaſum. </s>
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            <p id="N1C7D5" type="main">
              <s id="N1C7D7">
                <emph type="center"/>
                <emph type="italics"/>
              Theorema
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              109.
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              </s>
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            <p id="N1C7E3" type="main">
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              Si proijciatur per inclinatam ſurſum, & declinantem ad Ortum, linea mo­
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              tus erit Parabola, cuius amplitudo erit mixta ex declinante horizontali, &
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              horizontali verſus Boream,
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              ſit enim horizontalis verſus Boream AK,
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              horizontalis verſus Ortum AR, declinans à Borea in Ortum AD, mixta
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              ex AD, AK ſit AI, ſitque Rhomboides AE parallelus horizonti; </s>
              <s id="N1C7F6">ſit
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              EG perpendicularis ſurſum, ſit HD parallela GE; differentia ſpatij,
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              quod acquiritur motu naturali eo tempore, quo percurritur AI, & FC,
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              quæ ſit ſubdupla EG. </s>
              <s id="N1C800">Dico lineam motus AHF eſſe parabolicam, quæ
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              omnia conſtant ex dictis; </s>
              <s id="N1C806">idemque dictum eſto de omni alia inclinata
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              ſurſum ſimul, & declinante, ſeu verſus Ortum ſeu verſus Occaſum; </s>
              <s id="N1C80C">porrò
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              triangulum AEG incubat
                <expan abbr="perpẽdiculariter">perpendiculariter</expan>
              plano horizontali ADEK; </s>
              <s id="N1C816">
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              ſi verò proiiciatur per inclinatam deorſum voluatur AKE, dum KO
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              ſit perpendicularis deorſum; </s>
              <s id="N1C81D">ſit planum RK horizontale, voluatur
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              AKE circa A, ita vt KO ſit ſemper perpendicularis deorſum, donec
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              AE ſecet planum RK in AD ſint IO. & EA vt EF, GH in ſuperio­
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              re figura, & per puncta AOM ducatur curua; hæc eſt linea motus
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              quæſita. </s>
            </p>
            <p id="N1C829" type="main">
              <s id="N1C82B">
                <emph type="center"/>
                <emph type="italics"/>
              Theorema
                <emph.end type="italics"/>
              110.
                <emph.end type="center"/>
              </s>
            </p>
            <p id="N1C837" type="main">
              <s id="N1C839">
                <emph type="italics"/>
              Si proiiciatur per declinantem ab Austro ad Ortum & inclinatam ſurſum,
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              deſcribet Parabolam, cuius amplitudo erit mixta ex horizontali verſus Bo­
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              ream & declinante horizontali ab Auſtro ad Ortum
                <emph.end type="italics"/>
              ſit AF horizontalis
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              verſus Boream, AG verſus Ortum, AI declinans ab Auſtro ad Ortum,
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              AG mixta ex AF AI AL inclinata, ANK Parabola; </s>
              <s id="N1C84A">ſit enim planum
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              FI horizontale cui triangulum ALI incubet perpendiculariter in ſe­
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              ctione AG, reliqua ſunt facilia; </s>
              <s id="N1C852">idem dico de inclinata ſurſum ſimul, &
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              declinante ab Auſtro ad Occaſum; </s>
              <s id="N1C858">ſi verò ſit inclinata deorſum, ſit pla­
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              num ACB horizontale, AB ſit declinans, AC ſit mixta ex AB & ho­
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              rizontali verſus Boream AF; ſit AD inclinata deorſum, fiatque cur­
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              ua AQE more ſolito, ita vt triangulum ACE perpendiculariter
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              deorſum pendeat ex plano horizontali ACB, reliqua ſunt facilia. </s>
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