Fabri, Honoré, Tractatus physicus de motu locali, 1646

Page concordance

< >
Scan Original
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
< >
page |< < of 491 > >|
    <archimedes>
      <text>
        <front>
          <section>
            <p id="N10A58" type="main">
              <s id="N10A62">
                <pb xlink:href="026/01/020.jpg"/>
              tur per horizontalem, quæ conueniat cum eadem linea directionis,
                <lb/>
              iactus eſt longior toto illo ſpatio, quod nauis decurrit, dum iactus
                <lb/>
              durat; </s>
              <s id="N10A6E">breuior tamen, ſi in partem oppoſitam fiat iactus in hoc ca­
                <lb/>
              ſu, ſi nauis æqualem impetum imprimeret, deorſum rectà ferretur
                <lb/>
              mobile motu naturali; </s>
              <s id="N10A76">imò ſagitta poſſet retorqueri in iaculatorem: </s>
              <s id="N10A7A">
                <lb/>
              ſi terra eſſet vtrimque peruia, lapis demiſſus per multa annorum
                <lb/>
              millia libraretur; non tamen eſſet motuus perpetuus. </s>
            </p>
            <figure id="id.026.01.020.1.jpg" xlink:href="026/01/020/1.jpg" number="10"/>
            <p id="N10A86" type="main">
              <s id="N10A88">
                <emph type="center"/>
                <emph type="italics"/>
              De motu reflexo.
                <emph.end type="italics"/>
                <emph.end type="center"/>
              </s>
            </p>
            <p id="N10A93" type="main">
              <s id="N10A95">1. MOtus reflexi vera cauſa eſt impetus prior, ad nouam li­
                <lb/>
              neam determinatus ab occurrente obice; </s>
              <s id="N10A9B">planum refle­
                <lb/>
              ctens eſt cauſa nouæ determinationis ſuo modo; </s>
              <s id="N10AA1">cauſam enim di­
                <lb/>
              co eam, ex qua aliquid ſequitur: </s>
              <s id="N10AA7">ex gemina determinatione, noua,
                <lb/>
              ſcilicet, per ipſam perpendicularem erectam in puncto contactus,
                <lb/>
              & priore per lineam incidentiæ, ab eodem puncto contactus pro­
                <lb/>
              pagatam, fit determinatio mixta per lineam reflexionis; </s>
              <s id="N10AB1">quæ omnia
                <lb/>
              patent ex terminis: </s>
              <s id="N10AB7">hinc nullus impetus producitur à plano refle­
                <lb/>
              ctente; </s>
              <s id="N10ABD">quippe prior poteſt determinari ad nouam lineam: adde,
                <lb/>
              quòd planum, quod caret impetu, impetum producere non poteſt. </s>
            </p>
            <p id="N10AC3" type="main">
              <s id="N10AC5">2. Imò nihil impetus deſtruitur in reflexione pura per ſe; </s>
              <s id="N10AC9">quia ni­
                <lb/>
              hil impetus eſt fruſtrà per ſe in pura reflexione; </s>
              <s id="N10ACF">multus tamen im­
                <lb/>
              petus deſtruitur per accidens, tùm ab ipſo attritu tùm mollitie
                <lb/>
              & ceſſione, tùm preſſione: </s>
              <s id="N10AD7">hinc ſuppoſito eodem iactu, perpendi­
                <lb/>
              cularis reflexa eſt omnium reflexarum minima; </s>
              <s id="N10ADD">quia per eam li­
                <lb/>
              neam maximus ictus infligitur; </s>
              <s id="N10AE3">igitur maxima eſt partium colliſio,
                <lb/>
              & preſſio: hinc etiam corpora duriora longiùs reflectuntur, per ipſam
                <lb/>
              quoque
                <expan abbr="perpendicularẽ">perpendicularem</expan>
              , dum planum reflectens ſit æquè durum. </s>
            </p>
            <p id="N10AEF" type="main">
              <s id="N10AF1">3. Determinatio noua dupla eſt prioris, poſita linea incidentiæ
                <lb/>
              perpendiculari, & poſito etiam plano reflectente immobili; </s>
              <s id="N10AF7">quia
                <lb/>
              alioquin anguli reflexionis non eſſent æquales angulis incidentiæ: </s>
              <s id="N10AFD">
                <lb/>
              ſi globus reflectens ſit æqualis impacto, æqualis eſt ceſſio reſiſtenciæ
                <lb/>
              cùm ſit æquale agens reſiſtenti, perid enim reflectens reſiſtit, per
                <lb/>
              quod eſt: </s>
              <s id="N10B06">igitur, ſi æqualis reſiſtit, & cedit, certè æqualiter ce­
                <lb/>
              dit, & reſiſtit: </s>
              <s id="N10B0C">hinc noua determinatio æqualis eſt priori: </s>
              <s id="N10B10">hinc glo­
                <lb/>
              bus impactis ſiſtit immobilis; quia ex duabus determinationibus
                <lb/>
              oppoſitis neutra præualet. </s>
            </p>
          </section>
        </front>
      </text>
    </archimedes>