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 Notes

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              <pb o="5" file="0025" n="25" rhead="LIBER PRIMVS."/>
              <figure xlink:label="fig-0025-01" xlink:href="fig-0025-01a" number="6">
                <image file="0025-01" xlink:href="http://echo.mpiwg-berlin.mpg.de/zogilib?fn=/permanent/library/xxxxxxxx/figures/0025-01"/>
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              <note position="left" xlink:label="note-0025-01" xlink:href="note-0025-01a" xml:space="preserve">10</note>
              <note position="left" xlink:label="note-0025-02" xlink:href="note-0025-02a" xml:space="preserve">20</note>
              <note position="left" xlink:label="note-0025-03" xlink:href="note-0025-03a" xml:space="preserve">30</note>
            tem recti non vergunt directò ad A, punctum meridiei, aut ad C, punctum ſeptentrionis, ſed ab utroque
              <lb/>
            declinant verſus D, punctum occaſus, aut verſus B, punctum ortus, delineabuntur quidem in eorum fa-
              <lb/>
            cieb{us}, quæ ſpectant ad puncta inter A, & </s>
            <s xml:id="echoid-s421" xml:space="preserve">D, locata, horologia declinantia à meridie, hoc eſt, à puncto
              <lb/>
            A, meridiei in occaſum, in faciebus verò oppoſitis ad puncta inter C, & </s>
            <s xml:id="echoid-s422" xml:space="preserve">B, conuerſis, horologia à ſepten
              <lb/>
            trione, id eſt, à puncto C, ſeptentrionis in ortum declinantia.</s>
            <s xml:id="echoid-s423" xml:space="preserve"/>
          </p>
          <note position="left" xml:space="preserve">40</note>
          <p style="it">
            <s xml:id="echoid-s424" xml:space="preserve">QVOD ſi ſupra rectas I K, L M, conſtruantur plana verſus ortum B, vel occaſum D, ad Horizon-
              <lb/>
            tem inclinata, deſcribentur in eorum faciebus ſuperioribus horologia ſuperiora declinantia ab Horizon-
              <lb/>
            te: </s>
            <s xml:id="echoid-s425" xml:space="preserve">Inferiora autem in inferioribus faciebus. </s>
            <s xml:id="echoid-s426" xml:space="preserve">Ita quoq; </s>
            <s xml:id="echoid-s427" xml:space="preserve">ſi ſupra rectas E F, G H, inclinata ſint ad Horizon
              <lb/>
            tem plana verſ{us} A, meridiem, vel verſus C, ſeptentrionem, appellabuntur horologia in eorum faciebus
              <lb/>
            ſuperiorib{us} delineata, ſuperior a ad Horizont em inclinata: </s>
            <s xml:id="echoid-s428" xml:space="preserve">Inferiora autem in inferioribus facieb{us} de-
              <lb/>
            ſcripta. </s>
            <s xml:id="echoid-s429" xml:space="preserve">Si deniq; </s>
            <s xml:id="echoid-s430" xml:space="preserve">ſupra rect{as} E I, H M, F L, G K, inclinata ſint plana ad Horizontem quomodocunq;
              <lb/>
            </s>
            <s xml:id="echoid-s431" xml:space="preserve">deſcribentur in eorum facieb{us} ſuperiorib{us} horologia ſuperior a declinantia ſimul, & </s>
            <s xml:id="echoid-s432" xml:space="preserve">inclinata. </s>
            <s xml:id="echoid-s433" xml:space="preserve">In infe-
              <lb/>
            riorib{us} autem facieb{us} inferiora. </s>
            <s xml:id="echoid-s434" xml:space="preserve">Ex quibus facile colligitur, infinita propemodum eſſe poſſe genera horo
              <lb/>
            logiorum declinantium à Verticali, declinantium ab Horizonte, inclinatorum ad Horizontem, at q; </s>
            <s xml:id="echoid-s435" xml:space="preserve">de-
              <lb/>
            clinantium ſimul & </s>
            <s xml:id="echoid-s436" xml:space="preserve">inclinatorum, propterea quod vna ſuperficies plus, aut minus in infinitum deflectere
              <lb/>
            poteſt à Verticali, aut Horizonte, & </s>
            <s xml:id="echoid-s437" xml:space="preserve">ad Horizontem inclinare. </s>
            <s xml:id="echoid-s438" xml:space="preserve">Hoc igitur modo Sciotherica horologia
              <lb/>
              <note position="left" xlink:label="note-0025-05" xlink:href="note-0025-05a" xml:space="preserve">50</note>
            distribui ſolent, habita ratione ſitus planorum, in quibus depinguntur.</s>
            <s xml:id="echoid-s439" xml:space="preserve"/>
          </p>
          <p style="it">
            <s xml:id="echoid-s440" xml:space="preserve">CAETERVM omnia hæc horologia, quæ recenſuimus, diximus æquidiſtare circulis illis maximis,
              <lb/>
              <note position="right" xlink:label="note-0025-06" xlink:href="note-0025-06a" xml:space="preserve">Quare horo
                <lb/>
              logia plana di-
                <lb/>
              cantur æqui@i-
                <lb/>
              ſtare circulis
                <unsure/>
                <lb/>
              maximis, a qui-
                <lb/>
              bus nomen ſu-
                <lb/>
              munt.</note>
            à quibus nomina trahunt, quoniam vertex ſtyli ad horologij planum rectus collocari intelligitur in centro
              <lb/>
            mundi, at q; </s>
            <s xml:id="echoid-s441" xml:space="preserve">adeò in communi centro illorum omnium circulorum maximorum. </s>
            <s xml:id="echoid-s442" xml:space="preserve">Vnde fit, vt horologiorum
              <lb/>
            plana tantum ab ipſis circulis abſint, quanta eſt cuiuſq; </s>
            <s xml:id="echoid-s443" xml:space="preserve">styli longitudo. </s>
            <s xml:id="echoid-s444" xml:space="preserve">Quam ob rem decipiuntur illi, qui
              <lb/>
            docent horologia omnia deſcribi in ipſiſmet circulis maximis, à quibus nomina accipiunt. </s>
            <s xml:id="echoid-s445" xml:space="preserve">Sed hæc vberi{us}
              <lb/>
            explicabimus propoſ. </s>
            <s xml:id="echoid-s446" xml:space="preserve">2. </s>
            <s xml:id="echoid-s447" xml:space="preserve">huius libri.</s>
            <s xml:id="echoid-s448" xml:space="preserve"/>
          </p>
          <note position="right" xml:space="preserve">Horologio-
            <lb/>
          rum ſolauum
            <lb/>
          diuiſio ſumpta
            <lb/>
          @x tẽpore, quo
            <lb/>
          horas mõ@trãt.</note>
          <p style="it">
            <s xml:id="echoid-s449" xml:space="preserve">ALIO modo diuidi ſolent inſtrumenta, quæ hor{as} indicat, ex eo tempore, quo horas monſtr are ſolẽt.
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            </s>
            <s xml:id="echoid-s450" xml:space="preserve">Quædam enim appellantur diurna, quòd ſolurn in die, ſplendente ſole, horas indicent: </s>
            <s xml:id="echoid-s451" xml:space="preserve">Quædam nocturna,
              <lb/>
            quæ vel ſplendente luna, vel alijs aſtris, hor{as} noctu oſtendunt: </s>
            <s xml:id="echoid-s452" xml:space="preserve">Quædam deniq; </s>
            <s xml:id="echoid-s453" xml:space="preserve">diurna ſimul ac nocturna;</s>
            <s xml:id="echoid-s454" xml:space="preserve"/>
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