Ibn-al-Haitam, al-Hasan Ibn-al-Hasan; Witelo; Risner, Friedrich, Opticae thesavrvs Alhazeni Arabis libri septem, nunc primùm editi. Eivsdem liber De Crepvscvlis & Nubium ascensionibus. Item Vitellonis Thuvringopoloni Libri X. Omnes instaurati, figuris illustrati & aucti, adiectis etiam in Alhazenum commentarijs, a Federico Risnero, 1572

Page concordance

< >
Scan Original
51 45
52 46
53 47
54 48
55 49
56 50
57 51
58 52
59 53
60 54
61 55
62 56
63 57
64 58
65 59
66 60
67 61
68 62
69 63
70 64
71 65
72 66
73 67
74 68
75 69
76 70
77 71
78 72
79 73
80 74
< >
page |< < (49) of 778 > >|
    <echo version="1.0RC">
      <text xml:lang="lat" type="free">
        <div xml:id="echoid-div86" type="section" level="0" n="0">
          <p>
            <s xml:id="echoid-s2592" xml:space="preserve">
              <pb o="49" file="0055" n="55" rhead="OPTICAE LIBER II."/>
            figuram circumferentiæ rei uiſæ.</s>
            <s xml:id="echoid-s2593" xml:space="preserve"> Et ſimiliter figura circumferentiæ cuiuslibet partium ſuperficiei
              <lb/>
            rei uiſæ comprehenditur à ſentiente ex ſenſu ordinationis partium terminorum partis formæ.</s>
            <s xml:id="echoid-s2594" xml:space="preserve"> Et
              <lb/>
            cum ſentiens uoluerit certificare figuram circumferentiæ ſuperficiei rei uiſæ, aut figuram circum-
              <lb/>
            ferentiæ partis rei uiſæ, mouebit axem radialem ſuper circumferentiam rei uiſæ:</s>
            <s xml:id="echoid-s2595" xml:space="preserve"> & ſic per motum
              <lb/>
            certificabit ſitum partium terminorum formæ ſuperficiei, quæ eſt in ſuperficie membri ſentientis,
              <lb/>
            & in concauo nerui communis.</s>
            <s xml:id="echoid-s2596" xml:space="preserve"> Quare comprehendet ex certificatione ſituum terminorum for-
              <lb/>
            mæ, figuram circumferentiæ ſuperficiei rei uiſæ.</s>
            <s xml:id="echoid-s2597" xml:space="preserve"> Secundum ergo hunc modum erit comprehen-
              <lb/>
            ſio figuræ circumferentiæ rei uiſæ, & figuræ circumferentiæ cuiuslibet partis ſuperficiei rei uiſæ
              <lb/>
            per ſenſum uiſus.</s>
            <s xml:id="echoid-s2598" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div87" type="section" level="0" n="0">
          <head xml:id="echoid-head111" xml:space="preserve" style="it">33. Superficies globoſa percipitur è propinquitate partium mediarum, & æquabi-
            <lb/>
          li longinquitate extremarum. 48 p 4.</head>
          <p>
            <s xml:id="echoid-s2599" xml:space="preserve">FOrma autem ſuperficiei rei uiſæ non comprehenditur à uiſu, niſi ex comprehenſione ſituum
              <lb/>
            partium ſuperficiei rei uiſæ, & ex conſimilitudine & diſsimilitudine eorundem ſituum.</s>
            <s xml:id="echoid-s2600" xml:space="preserve"> Et
              <lb/>
            certificatur forma ſuperficiei ex comprehenſione diuerſitatis inæqualitatis remotionum par-
              <lb/>
            tium ſuperficiei rei uiſę, & æqualitatis earum, aut inæqualitatis eleuationum partium ſuperficiei
              <lb/>
            & æqualitatis earum.</s>
            <s xml:id="echoid-s2601" xml:space="preserve"> Quoniam conuexitas ſuperficiei non comprehenditur à uiſu, niſi aut ex
              <lb/>
            comprehenſione propinquitatis partium mediarum in ſuperficie, & remotionis partium in termi-
              <lb/>
            nis:</s>
            <s xml:id="echoid-s2602" xml:space="preserve"> aut ex inęqualitate eleuationum partium eius, quando ſuperficies ſuperior corporis fuerit cõ-
              <lb/>
            uexa.</s>
            <s xml:id="echoid-s2603" xml:space="preserve"> Et ſimiliter conuexitas termini ſuperficiei non comprehenditur à uiſu, niſi aut ex compre-
              <lb/>
            henſione propinquitatis medij, & remotionis extremitatum, quando conuexitas eius opponitur
              <lb/>
            uiſui:</s>
            <s xml:id="echoid-s2604" xml:space="preserve"> aut ex inęqualitate eleuationum partium eius, quãdo gibboſitas eius fuerit deorſum, aut ſur-
              <lb/>
            ſum:</s>
            <s xml:id="echoid-s2605" xml:space="preserve"> aut ex inęqualitate partium eius, quod in eo dextrum eſt, aut ſiniſtrum, quando gibboſitas e-
              <lb/>
            ius fuerit dextra aut ſiniſtra.</s>
            <s xml:id="echoid-s2606" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div88" type="section" level="0" n="0">
          <head xml:id="echoid-head112" xml:space="preserve" style="it">34. Superficies caua percipit ur è longinquit ate partium mediarum, & æquabilipro-
            <lb/>
          pinquitate extremarum. 49 p 4.</head>
          <p>
            <s xml:id="echoid-s2607" xml:space="preserve">COncauitas autem ſuperficiei, quando opponitur uiſui, comprehenditur à uiſu ex compre-
              <lb/>
            henſione remotionis partium mediarum, & appropinquatione extremitatum terminorum.</s>
            <s xml:id="echoid-s2608" xml:space="preserve">
              <lb/>
            Similiter eſt de concauitate terminorum ſuperficiei, quando opponitur uiſui:</s>
            <s xml:id="echoid-s2609" xml:space="preserve"> & uiſus non
              <lb/>
            comprehendit concauitatem ſuperficiei, quando concauitas fuerit oppoſita ſurſum, aut deorſum,
              <lb/>
            aut ad latus, niſi quando ſuperficies concaua fuerit in parte abſciſſa, & apparuerit arcualitas termi-
              <lb/>
            ni eius, quę eſt uerſus uiſum.</s>
            <s xml:id="echoid-s2610" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div89" type="section" level="0" n="0">
          <head xml:id="echoid-head113" xml:space="preserve" style="it">35. Planities in diſtantia moderata directè oppoſita uiſui: percipitur ex æquabili
            <lb/>
          partium longinquitate, & ſimilitudine collocationis atque ordinis ipſarum inter i-
            <lb/>
          pſas. 47 p 4.</head>
          <p>
            <s xml:id="echoid-s2611" xml:space="preserve">PLanities autem ſuperficierum comprehenditur à uiſu ex comprehenſione æqualitatis remo-
              <lb/>
            tionum partium & conſimilitudinis ordinationis earum.</s>
            <s xml:id="echoid-s2612" xml:space="preserve"> Et ſimiliter comprehenditur recti-
              <lb/>
            tudo termini ſuperficiei, quando terminus opponetur uiſui.</s>
            <s xml:id="echoid-s2613" xml:space="preserve"> Rectitudo enim termini ſuper-
              <lb/>
            ficiei, & arcualitas, aut curuitas eius, quando ſuperficies fuerit oppoſita uiſui, & termini continue-
              <lb/>
            rint ipſam, comprehenditur à uiſu ex ordinatione partium eius inter ſe.</s>
            <s xml:id="echoid-s2614" xml:space="preserve"> Conuexitas ergo ſuperfi-
              <lb/>
            ciei rei uiſæ, quæ opponitur uiſui, & concauitas eius, & planities comprehenduntur à uiſu ex com
              <lb/>
            prehenſione diuerſitatis remotionis partium ſuperficiei, aut eleuationum earum, aut latitudinum
              <lb/>
            earum, & ex quantitatibus exceſſus remotionis partium, aut eleuationum, aut latitudinum ea-
              <lb/>
            rum interſe.</s>
            <s xml:id="echoid-s2615" xml:space="preserve"> Et ſimiliter conuexitas, & concauitas, & planities cuiuslibet partis rei uiſæ compre-
              <lb/>
            henditur à uiſu ex comprehenſione exceſſus remotionum partium illius partis, aut exceſſus eleua-
              <lb/>
            tionum, aut latitudinum earum, aut æqualitatis earum.</s>
            <s xml:id="echoid-s2616" xml:space="preserve"> Et propter iſtam cauſſam non comprehen
              <lb/>
            dit uiſus concauitatem & conuexitatem, niſi in uiſibilibus, quorum remotio eſt mediocris.</s>
            <s xml:id="echoid-s2617" xml:space="preserve"> Vi-
              <lb/>
            ſus autem comprehendit propinquitatem quarundam partium ſuperficiei, & remotionem qua-
              <lb/>
            rundam per quædam corpora interuenientia inter ipſum, & ſuperficiem, & per corpora reſpicien-
              <lb/>
            tia remotiones partium, quarum appropinquatio & remotio certificatur à uiſu.</s>
            <s xml:id="echoid-s2618" xml:space="preserve"> Et cum quædam
              <lb/>
            partes ſuperficiei fuerint prominentes, & quædam profundæ:</s>
            <s xml:id="echoid-s2619" xml:space="preserve"> comprehendet uiſus prominen-
              <lb/>
            tiam & profunditatem illarum per obliquationem ſuperficierum partium, & ſectiones partium, &
              <lb/>
            curuitates earum in locis profunditatis, & per ſitus ſuperficierum partium inter ſe.</s>
            <s xml:id="echoid-s2620" xml:space="preserve"> Et hoc erit,
              <lb/>
            quando uiſus non comprehenderit illam ſuperficiem antè, neque aliquam huius generis.</s>
            <s xml:id="echoid-s2621" xml:space="preserve"> Si autem
              <lb/>
            illa res uiſa fuerit ex uiſibilibus aſſuetis, comprehendet uiſus formam eius, & formam ſuperſiciei
              <lb/>
            per cognitionem antecedentem.</s>
            <s xml:id="echoid-s2622" xml:space="preserve"> Forma a
              <gap/>
            tem rei uiſæ, quæ continetur ex ſuperficiebus ſecanti-
              <lb/>
            bus ſe, & diuerſorum ſituum, comprehenditur à uiſu ex comprehenſione ſectionis ſuperficiei e-
              <lb/>
            ius, & ex comprehenſione ſitus cuiuslibet ſuperficierum eius, & ex comprehenſione ſuperficie-
              <lb/>
            rum earum inter ſe.</s>
            <s xml:id="echoid-s2623" xml:space="preserve"> Formæ igitur figurarum rerum uiſarum, quarum corporeitas comprehendi-
              <lb/>
            tur à uiſu, comprehenduntur ex comprehenſione formarum ſuperficierum earum, & ex compre-
              <lb/>
            </s>
          </p>
        </div>
      </text>
    </echo>
Impressum