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

Table of figures

< >
[11] b e g a h d k f z
[12] d a a b c
[13] a e g b f z q x c u d
[14] e r g b z f k m a n l c u d
[15] n m a b k c e d f g p h q ſ r o
[16] a r t
[17] d z c s f r t q k l h b n m a
[18] d z c s f r t q k l h b n m a
[19] n m l b h i k e p t r o s u q a f d g c
[Figure 20]
[21] p k c z q x y b
[Figure 22]
[Figure 23]
[24] e d f a c b
[25] a s b c
[26] a k f s d m b g c h
[27] a e g c b d h f
[28] a b f g c d n
[29] b a f l g e k h n d c
[30] a b e c f h g r i d m
[31] a b h c
[32] a d b k ſ c
[33] b ſ a u f d c h n g r k s x q p
[34] f d d e r b g c h i p ſ q s n k
[35] f a r d e b g c h p ſ s n k
[36] ſ g d f h b a
[37] a d f t e b
[38] d b c e f g b d
[39] a f b c d e
[40] a f b c d e g
< >
page |< < (5) of 778 > >|
    <echo version="1.0RC">
      <text xml:lang="lat" type="free">
        <div xml:id="echoid-div14" type="section" level="0" n="0">
          <pb o="5" file="0011" n="11" rhead="OPTICAE LIBER I."/>
        </div>
        <div xml:id="echoid-div15" type="section" level="0" n="0">
          <head xml:id="echoid-head36" xml:space="preserve" style="it">8. Centrum ſphæræ uueæ eſt inferi{us} centris reliquarum oculi partium. 8 p 3.</head>
          <p>
            <s xml:id="echoid-s495" xml:space="preserve">ET quia ſuperficies concaua corneæ contingit ſuperficiem humoris albuginei, qui eſt in ante-
              <lb/>
            riori foramine uueę, & ſuperponitur ipſi.</s>
            <s xml:id="echoid-s496" xml:space="preserve"> Superficies ergo humoris albuginei conuexa etiam
              <lb/>
            eſt ſuperficies ſphærica, cuius centrum eſt centrũ ſuperficiei ipſi ſuperpoſitæ.</s>
            <s xml:id="echoid-s497" xml:space="preserve"> Superficies er-
              <lb/>
            go manifeſta corneæ, & ſuperficies intrinſeca ipſius, & ſuperficies humoris albuginei cõuexa, quæ
              <lb/>
            contingit concauum corneæ, ſunt ſuperficies ſphæricę æ quidiſtantes.</s>
            <s xml:id="echoid-s498" xml:space="preserve"> Centrum igitur earum eſt u-
              <lb/>
            num punctum cõmune, & eſt remotius in profundo centro uueæ:</s>
            <s xml:id="echoid-s499" xml:space="preserve"> & linea, quæ tranſit per centrum
              <lb/>
            uueæ, & per centrum corneæ, & per centrũ foraminis, quod eſt in anteriori uueæ, quando extendi-
              <lb/>
            tur rectè, tranſibit per medium concauitatis nerui, ſuper quem cõponitur oculus:</s>
            <s xml:id="echoid-s500" xml:space="preserve"> quoniã foramen
              <lb/>
            quod eſt in anteriori uueæ, eſt oppoſitũ foramini, quod eſt in poſteriore parte uueæ, quod eſt extre
              <lb/>
            mitas concauitatis nerui [per 4 n.</s>
            <s xml:id="echoid-s501" xml:space="preserve">]</s>
          </p>
        </div>
        <div xml:id="echoid-div16" type="section" level="0" n="0">
          <head xml:id="echoid-head37" xml:space="preserve" style="it">9. Recta connectẽs centra ſphærarũ cryſtallinæ & uueæ, cõtinuata cadit in centrũ circuli
            <lb/>
          cõglutinãtis cryſtallinã & uitreã ſphær {as} cũ uuea: & eſt ad ipſum perpendicularis. 10 p 3.</head>
          <p>
            <s xml:id="echoid-s502" xml:space="preserve">ET ſuperficies anterioris glacialis etiã eſt ſphęrica ſuperficies, & ipſa ſecat ſphęrã uueę:</s>
            <s xml:id="echoid-s503" xml:space="preserve"> centrũ
              <lb/>
            ergo eius eſt remotius in profundo cẽtro uueæ.</s>
            <s xml:id="echoid-s504" xml:space="preserve"> Et linea recta, quę cõtinuat cẽtra earũ, tranſit
              <lb/>
            per centrũ circuli ſectionis, & eſt perpendicularis ſuper ipſum.</s>
            <s xml:id="echoid-s505" xml:space="preserve"> Et circulus ſectionis inter ſu-
              <lb/>
            perficiẽ anterioris glacialis, & ſuperficiẽ ſphęrę uueæ, eſt aut circulus diſtinguẽs finẽ conſolidatio-
              <lb/>
            nis inter glacialẽ & uueã, aut æquidiſtans ei:</s>
            <s xml:id="echoid-s506" xml:space="preserve"> quoniã ſuperficies quę eſt in anteriori glacialis, eſt op-
              <lb/>
            poſita foramini, qđ eſt in anteriori uueę, & ſitus eius eſt cõſimilis cũ eo.</s>
            <s xml:id="echoid-s507" xml:space="preserve"> Finis ergo iſtius ſuperficiei
              <lb/>
            (& eſt circulus ſectionis inter duas ſuperficies glacialis & uueę) aut eſt ipſe circulus conſolidatio-
              <lb/>
            nis, aut ęquidiſtãs ei.</s>
            <s xml:id="echoid-s508" xml:space="preserve"> Si ergo circulus ſectionis inter duas ſuperficies glacialis, fuerit circulus cõſoli
              <lb/>
            dationis, iſte circulus eſt circulus ſectionis inter ſuperficiẽ anterioris glacialis, & inter ſuperficiem
              <lb/>
            uueę.</s>
            <s xml:id="echoid-s509" xml:space="preserve"> Et ſi circulus ſectionis inter duas ſuperficies glacialis fuerit ęquidiſtãs circulo cõſolidationis
              <lb/>
            ſphęrę glacialis cũ uuea:</s>
            <s xml:id="echoid-s510" xml:space="preserve"> (quod quidẽ accidit, ſi fuerit cõſolidatio in poſteriori parte glacialis) tune
              <lb/>
            ſuperficies anterioris partis glacialis, quando fuerit mẽte extenſa ſuper illud, ſuper quod eſt ex ſua
              <lb/>
            ſphęra, ſecabit ſphęrã uueæ ſuper circulum æquidiſtantẽ iſti circulo, ſcilicet circulo ſectionis inter
              <lb/>
            duas ſuperficies glacialis propter ſimilitudinẽ ſitus iſtius circuli ad circumferentiam ſphæræ uueę.</s>
            <s xml:id="echoid-s511" xml:space="preserve">
              <lb/>
            Et quia iſte circulus eſt æquidiſtans circulo cõſolidationis, erit ergo circulus ſectionis inter ſuper-
              <lb/>
            ficiẽ anterioris glacialis, & inter ſphæram uueã, aut ipſe circulus cõſolidationis, aut ęquidiſtãs ei.</s>
            <s xml:id="echoid-s512" xml:space="preserve"> Si
              <lb/>
            ergo iſte circulus fuerit ipſe circulus cõſolidationis, linea recta, quæ trãfit per centrũ anterioris gla-
              <lb/>
            cialis, & per centrũ uueę, tranſibit per centrũ ipſius circuli:</s>
            <s xml:id="echoid-s513" xml:space="preserve"> & erit perpendicularis ſuper ipſum:</s>
            <s xml:id="echoid-s514" xml:space="preserve"> quo
              <lb/>
            niã iſte circulus erit circulus ſectionis inter duas illas ſphęricas ſuperficies.</s>
            <s xml:id="echoid-s515" xml:space="preserve"> Sed ſi iſte circulus fue-
              <lb/>
            rit ęquidiſtans circulo conſolidationis, & eſt ęquidiſtãs circulo ſectionis inter duas ſuperficies gla-
              <lb/>
            cialis:</s>
            <s xml:id="echoid-s516" xml:space="preserve"> eſt ergo cũ circulo ſectionis inter duas ſuperficies glacialis:</s>
            <s xml:id="echoid-s517" xml:space="preserve"> in ſuperficie una ſphęrica:</s>
            <s xml:id="echoid-s518" xml:space="preserve"> quæ
              <lb/>
            eſt ſuperficies anterioris glacialis, & eſt ęquidiſtãs circulo ſectiõis.</s>
            <s xml:id="echoid-s519" xml:space="preserve"> Linea ergo quę trãſit per centrũ
              <lb/>
            uueę, & per centrũ ſuperficiei anterioris glacialis, tranſit per centrũ circuli cõſolidationis ſecundũ
              <lb/>
            oẽs diſpoſitiones, & eſt perpendicularis ſuper ipſum, ſiue ſit circulus conſolidationis ipſe circulus
              <lb/>
            ſectionis inter ſuperficiem anterioris glacialis & inter ſphærã uueę, ſiue ſit ęquidiſtans iſti circulo.</s>
            <s xml:id="echoid-s520" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div17" type="section" level="0" n="0">
          <head xml:id="echoid-head38" xml:space="preserve" style="it">10. Centrum ſphæræ cryſtallinæ alti{us} eſt centro ſphæræ uitreæ. 11 p 3.</head>
          <p>
            <s xml:id="echoid-s521" xml:space="preserve">ET iterũ ſuperficies anterioris glacialis, & ſuperficies reſidui glacialis, ſunt duę ſuperficies ſphę
              <lb/>
            ricæ ſecantes ſe:</s>
            <s xml:id="echoid-s522" xml:space="preserve"> centrum ergo ſuperficiei anterioris, eſt remotius in profundo centro ſuper-
              <lb/>
            ficiei poſterioris.</s>
            <s xml:id="echoid-s523" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div18" type="section" level="0" n="0">
          <head xml:id="echoid-head39" xml:space="preserve" style="it">11. Rect a connectens centra ſphær arum & uueæ, continuata cadit in centrum ui-
            <lb/>
          treæ, & medium cauinerui optici. 12 p 3.</head>
          <p>
            <s xml:id="echoid-s524" xml:space="preserve">ET linea recta, quæ continuat iſta duo cẽtra, tranſit per cen trũ circuli ſectionis, & eſt perpẽdi-
              <lb/>
            cularis ſuper ipſum:</s>
            <s xml:id="echoid-s525" xml:space="preserve"> & iam declaratũ eſt [9 n] quod tranſit per centrũ circuli conſolidatiõis,
              <lb/>
            & eſt perpẽdicularis ſuper ipſum:</s>
            <s xml:id="echoid-s526" xml:space="preserve"> hie uerò circulus aut eſt circulus ſectionis, aut ęquidiſtans
              <lb/>
            ei.</s>
            <s xml:id="echoid-s527" xml:space="preserve"> Linea ergo quę tranſit per centrũ uueæ, & per centrum anterioris glacialis, & per centrũ circuli
              <lb/>
            eõſolidationis, & eſt perpendicularis ſuper iſtũ circulũ, tranſit per centrũ reſidui glacialis.</s>
            <s xml:id="echoid-s528" xml:space="preserve"> Et cum
              <lb/>
            linea iſta tranſeat per cẽtrum reſidui glacialis, & per centrum circuli cõſolidationis, & ſit erecta ſu-
              <lb/>
            per circulum cõſolidationis ſecundum angulos rectos:</s>
            <s xml:id="echoid-s529" xml:space="preserve"> extenditur ergo in medio concauitatis ner
              <lb/>
            ui, ſuper quẽ cõponitur oculus:</s>
            <s xml:id="echoid-s530" xml:space="preserve"> quoniã circulus cõſolidationis eſt extremitas cõcauitatis nerui.</s>
            <s xml:id="echoid-s531" xml:space="preserve"> Et
              <lb/>
            iam declaratum eſt [7 n] quòd linea trãſiens per centrum uueæ, & per centrum corneę, & per cen-
              <lb/>
            trum foraminis, quod eſt in exteriori ſiue anteriori uueę, extẽditur in medio cõcauitatis nerui.</s>
            <s xml:id="echoid-s532" xml:space="preserve"> Iſta
              <lb/>
            ergo linea, quę tranſit per duo centra ſuperficiei glacialis, & per cẽtrum uueę, eſt ipſa linea, quę trã
              <lb/>
            ſit per centrum corneę, & per cẽtrum foraminis, quod eſt in anteriori uueę.</s>
            <s xml:id="echoid-s533" xml:space="preserve"> Iſta ergo linea trãſit per
              <lb/>
            cẽtrum corneę, & per cẽtrum uueę, & per duo cẽtra ſuperficiei glacial
              <gap/>
            s & per centrum foraminis,
              <lb/>
            quod eſt in anteriore uueæ, & per
              <gap/>
            cẽtrum circuli cõſolidationis, & trãſit per duo media tunicarum
              <lb/>
            omniũ oppoſitarũ foramini uueę:</s>
            <s xml:id="echoid-s534" xml:space="preserve"> Et eſt perpẽdicularis ſuper ſuքficies omniũ tunicarũ oppoſitarũ
              <lb/>
            foramini uueę, & eſt perpẽdicularis ſuper ſuքficiẽ foraminis uueę, & eſt perpẽdicularis ſuper ſuքfi
              <lb/>
            ciẽ circuli conſolidationis, & extenditur in medio cõcauitatis nerui, ſuper quẽ cõponitur oculus.</s>
            <s xml:id="echoid-s535" xml:space="preserve"/>
          </p>
        </div>
      </text>
    </echo>