Clavius, Christoph, Gnomonices libri octo, in quibus non solum horologiorum solariu[m], sed aliarum quo[quam] rerum, quae ex gnomonis umbra cognosci possunt, descriptiones geometricè demonstrantur

Table of figures

< >
< >
page |< < (607) of 677 > >|
    <echo version="1.0RC">
      <text xml:lang="it" type="free">
        <div xml:id="echoid-div1992" type="section" level="1" n="510">
          <p>
            <s xml:id="echoid-s40224" xml:space="preserve">
              <pb o="607" file="0623" n="623" rhead="LIBER SEPTIMVS."/>
            Si verò linea ſtyli inæqualiter à lineis duabus horarijs hinc inde collocatis remota fuerit, vt accu-
              <lb/>
              <note position="right" xlink:label="note-0623-01" xlink:href="note-0623-01a" xml:space="preserve">Quando linea
                <lb/>
              ſtyli inæquali-
                <lb/>
              ter à duabus ho
                <lb/>
              ris hinc inde di
                <lb/>
              ſtat, quid facien
                <lb/>
              dum, vt accura-
                <lb/>
              tius arcus ſigno-
                <lb/>
              sunt
                <unsure/>
              deſcriban-
                <lb/>
              t@r.</note>
            ratius ſignorum arcus poſſint deſcribi, transferri poterunt omnia puncta horaria lineę ęquino-
              <lb/>
            ctialis ex vna parte (ex ea ſcilicet, in qua plura extiterint, vt in noſtro exemplo ex parte ſiniſtra) in
              <lb/>
            alteram, initio ſemper facto à linea indicis, ſeu ſtyli, vt in horologio noſtro fecimus. </s>
            <s xml:id="echoid-s40225" xml:space="preserve">Si enim per
              <lb/>
              <figure xlink:label="fig-0623-01" xlink:href="fig-0623-01a" number="392">
                <image file="0623-01" xlink:href="http://echo.mpiwg-berlin.mpg.de/zogilib?fn=/permanent/library/xxxxxxxx/figures/0623-01"/>
              </figure>
              <note position="left" xlink:label="note-0623-02" xlink:href="note-0623-02a" xml:space="preserve">10</note>
              <note position="left" xlink:label="note-0623-03" xlink:href="note-0623-03a" xml:space="preserve">20</note>
              <note position="left" xlink:label="note-0623-04" xlink:href="note-0623-04a" xml:space="preserve">30</note>
              <note position="left" xlink:label="note-0623-05" xlink:href="note-0623-05a" xml:space="preserve">40</note>
            hęc puncta ex C, lineas occultas duxerimus, quales ſunt illæ, quæ minutis illis lineis diſtinctæ
              <lb/>
            ſunt in horologio, habebimus ſemper binas lineas ęqualiter à linea indicis remotas, vt in eas idẽ
              <lb/>
            horarium interuallum ex figura radiorum Zodiaci acceptum transferri poſſit. </s>
            <s xml:id="echoid-s40226" xml:space="preserve">Immo ſi in horolo
              <lb/>
            gio per C, ducatur linea recta lineæ ęquinoctiali parallela, & </s>
            <s xml:id="echoid-s40227" xml:space="preserve">in eam transferantur ex C, centro
              <lb/>
            horologii ad vtramque partem portiones rectæ C A, in figura radiorum Zodiaci inter C, & </s>
            <s xml:id="echoid-s40228" xml:space="preserve">ra-
              <lb/>
            dios ſignorum interceptæ, habebuntur in ea puncta, per quę arcus ſignorum ducendi ſunt, vt in
              <lb/>
            horologio horizontali, & </s>
            <s xml:id="echoid-s40229" xml:space="preserve">Verticali in linea horę 6.</s>
            <s xml:id="echoid-s40230" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s40231" xml:space="preserve">HIC etiam arcus ſupra lineam ęquinoctialem pertinent ad ſigna auſtralia, reliqui verò ad bo-
              <lb/>
              <note position="right" xlink:label="note-0623-06" xlink:href="note-0623-06a" xml:space="preserve">Qui arcus ad ſi-
                <lb/>
              gna auſtralia, &
                <lb/>
              qui ad borealia
                <lb/>
              ſpectent.</note>
            realia, quemadmodum in Verticali horologio. </s>
            <s xml:id="echoid-s40232" xml:space="preserve">Porrò ex iis, quę cap.</s>
            <s xml:id="echoid-s40233" xml:space="preserve">2. </s>
            <s xml:id="echoid-s40234" xml:space="preserve">ſcripſimus, facile cogno-
              <lb/>
            ſcemus, quorum ſignorum arcus ſint hyperbolæ, & </s>
            <s xml:id="echoid-s40235" xml:space="preserve">quorum parabolæ, vel Ellipſes, prout nimirũ
              <lb/>
              <note position="left" xlink:label="note-0623-07" xlink:href="note-0623-07a" xml:space="preserve">50</note>
            linea ſtyli C B, radios ſignorum oppoſitorum ſecat, vel non.
              <lb/>
            </s>
            <s xml:id="echoid-s40236" xml:space="preserve">
              <note position="right" xlink:label="note-0623-08" xlink:href="note-0623-08a" xml:space="preserve">Plura ſcripta
                <lb/>
              ſunt propoſ. 2.
                <lb/>
              lib. 3. & in ſcho
                <lb/>
              lio eiuſdẽ pro-
                <lb/>
              poſ. de deſcri-
                <lb/>
              ptione arcuum
                <lb/>
              ſign orum.</note>
            </s>
          </p>
          <p>
            <s xml:id="echoid-s40237" xml:space="preserve">PLVRA ad accuratam arcuum ſignorum deſcriptionem attinentia reperies explicata à no-
              <lb/>
            bis lib. </s>
            <s xml:id="echoid-s40238" xml:space="preserve">3. </s>
            <s xml:id="echoid-s40239" xml:space="preserve">propoſ. </s>
            <s xml:id="echoid-s40240" xml:space="preserve">2. </s>
            <s xml:id="echoid-s40241" xml:space="preserve">& </s>
            <s xml:id="echoid-s40242" xml:space="preserve">ln ſcholio eiuſdem propof.</s>
            <s xml:id="echoid-s40243" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s40244" xml:space="preserve">
              <emph style="sc">H</emph>
            ORIZONTALIS linea eſt ipſa recta A B, quæ per locum ſtyli ducitur ad lineam meri
              <lb/>
            dianam perpendicularis. </s>
            <s xml:id="echoid-s40245" xml:space="preserve">
              <emph style="sc">H</emph>
            ęc autem linea horizontalis totum horologium dirimit in duo, quo-
              <lb/>
              <note position="right" xlink:label="note-0623-09" xlink:href="note-0623-09a" xml:space="preserve">Linea horizon-
                <lb/>
              talis.</note>
            rum illud, quod infra ipſam eſt, ad meridiem ſpectat, aliud verò ad Boream. </s>
            <s xml:id="echoid-s40246" xml:space="preserve">Vtrumque autem
              <lb/>
              <note position="right" xlink:label="note-0623-10" xlink:href="note-0623-10a" xml:space="preserve">Horizontalis li
                <lb/>
              nea diuidit to-
                <lb/>
              tum horologiũ
                <lb/>
              in auſtrale, &
                <lb/>
              boreale.</note>
            in muro ita collocandum eſt, vt linea horizontalis Horizonti ſit parallela, ſuperioremq́ue occu-
              <lb/>
            pet locum. </s>
            <s xml:id="echoid-s40247" xml:space="preserve">In boreali tamen arcus ſignorum auſtralium mutantur in arcus ſignorum borealium
              <lb/>
            oppoſitorum, velut in Verticali horologio, & </s>
            <s xml:id="echoid-s40248" xml:space="preserve">lineamenta, quæ ſunt ad ſiniſtram, deſcribenda ſunt
              <lb/>
            in parte dextra, & </s>
            <s xml:id="echoid-s40249" xml:space="preserve">è contrario, vt in pręcedenti cap. </s>
            <s xml:id="echoid-s40250" xml:space="preserve">docuimus. </s>
            <s xml:id="echoid-s40251" xml:space="preserve">Quando autem arcus ♑, in auſtra-
              <lb/>
            li horologio lineam horizontalem etiam ex altera parte ſecat, vt contingit, cum planum </s>
          </p>
        </div>
      </text>
    </echo>
Impressum