Biancani, Giuseppe, Aristotelis loca mathematica, 1615

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    <archimedes>
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            <pb pagenum="198" xlink:href="009/01/198.jpg"/>
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              <s id="s.003329">Secunda verò ratio, quæ maximè eos torquet eſt quanam ratione à Luna
                <lb/>
              effici poſſit ſecundus refluxus B, primò oppoſitus, cum tota terræ moles in­
                <lb/>
              teriecta obſtare videatur.</s>
            </p>
            <p type="main">
              <s id="s.003330">Verum huic difficultati optimè ex opticis ſatisfacere poſſumus, fi dixe­
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              rimus, æſtum illum effici quidem à Luna, & Sole, ſed tamen per lumen ex
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              ſyderibus ad partem illam auerſam reflexum; quod vt melius explicetur, &
                <lb/>
              confirmetur. </s>
              <s id="s.003331">Illud primò ſciendum non ſolam Lunam, verum etiam Solem
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              ad æſtum maris ciendum concurrere, quamuis primas in hoc Lunæ conce­
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              dat; experientia enim conſtat maiorem fieri fluxum, quando Sol, & Luna
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              ſimul ſunt coniuncta, vt in nouilunio accidit, quia lumina, & eorum virtu­
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              tes vnitæ fortius eandem maris partem directis radijs percellunt. </s>
              <s id="s.003332">ſimiliter
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              maior fit, quando luminaria ſunt oppoſita, vt in plenilunio contingit, quia
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              tunc radij vnius directi, aſſociantur cum reflexis alterius radijs,
                <expan abbr="hocq́">hocque</expan>
              ; mo­
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              do duplicati eaſdem terræ partes, & directè, & reflexè feriunt, vt melius in
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              ſequenti figura patebit.</s>
            </p>
            <p type="main">
              <s id="s.003333">Secundò præmittendum eſt, lumen Solis, & Lunæ reflecti ex denſis, ac per­
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              politis corporibus, vti ſunt omnia ſydera.</s>
            </p>
            <p type="main">
              <s id="s.003334">Tertiò, ex opticis aſſumendum, ſi corpora plurima ſphærica lumen re­
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              flectentia fuerint in circulari ambitu conſtituta, quemadmodum ſunt ſtellæ
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              affixæ in ambitu firmamenti collocatæ, reflectere
                <expan abbr="plurimũ">plurimum</expan>
              lumen ad vnum,
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              & idem punctum, quod ſit inter lumen, & ambitum illum; quod aſſumptum
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              manifeſtum eſt ex Iride, vbi ex plurimis ſphæricis guttulis lumen Solis re­
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              flectitur ad oculum; quamuis geometricè, & quidem facilè à Perſpectiuo
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              demonſtrari poſſit.</s>
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            <p type="main">
              <s id="s.003335">Quartò, ex opticis, dato corpore luminoſo, & ſphærico reflectente, &
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              puncto quouis, ad quod poſſit reflecti lumen, poteſt inueniri in ſphæra refle­
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              ctente punctum reflexionis.</s>
            </p>
            <p type="main">
              <s id="s.003336">Quintò, quanto radij perpendiculariores incidunt, tanto maiorem
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              vim habere.</s>
            </p>
            <p type="main">
              <s id="s.003337">Sit ergò Sol, & Luna ſimul, vt in figura
                <expan abbr="ſitq́">ſitque</expan>
              ; octauæ ſphæræ portio A B C,
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              cum innumeris in ea affixis ſyderibus. </s>
              <s id="s.003338">eſſe autem totum cœlum ſtellis penè
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              infinitis, ac conſtipatis refertum ſenſui palam fit, adhibito nouo illo, ac mi­
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              rabili Teleſcopij inuento.</s>
            </p>
            <p type="main">
              <s id="s.003339">Iam, vt patet ex 39.5. Alhazeni, ex ſingulis ſtellis Solis, ac Lunæ lumen
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              reflecti poteſt (niſi quid obſtet) ad partem terræ D, luminaribus auerſam,
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              vt quarto loco ſuppoſui. </s>
              <s id="s.003340">& præterea ex ſtellis circa B, poſitis radij Solis re­
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              percuti poſſunt ad eandem terræ partem D, perpendiculares, qui præ cæte­
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              ris maximam vim obtinent. </s>
              <s id="s.003341">quemadmodum lineæ in figura reflexæ
                <expan abbr="vtcunq;">vtcunque</expan>
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              oſtendunt, ideò aſſerendum eſt eos, æſtum D, excitare præcipuè poſſe,
                <expan abbr="neq;">neque</expan>
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              terræ quantitas Solis luci obeſt, cum conſtet vmbram terræ parum ſupra
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              Lunæ cœlum produci. </s>
              <s id="s.003342">poteſt tamen Lunæ eſſe impedimento quoad hos ra­
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              dios perpendiculares; ſed tamen alios minus perpendiculares, ſeu parum
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              obliquos nullo modo impedire poteſt, quo minus ad D, reſiliant. </s>
              <s id="s.003343">qui quam­
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              uis ſint minus quàm perpendiculares efficaces, obtinent tamen non modi­
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              cam vim. </s>
              <s id="s.003344">Ex ſtellis igitur circa A, & C, reflecti poteſt ex quarto fundamen­
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              to lumen
                <expan abbr="vtriuſq;">vtriuſque</expan>
              luminaris ad D, quod ſatis eſt efficax, cùm ferè </s>
            </p>
          </chap>
        </body>
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    </archimedes>
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