Benedetti, Giovanni Battista de, Io. Baptistae Benedicti ... Diversarvm specvlationvm mathematicarum, et physicarum liber : quarum seriem sequens pagina indicabit ; [annotated and critiqued by Guidobaldo Del Monte]

Table of contents

< >
[5.1.7.] SEPTIMVM. Euclidis uerò undecima propoſitio.
[5.1.8.] OCTAVVM. εuclidis uerò duodecima propoſitio.
[5.1.9.] NONVM. Euclidis uero tertiadecima propoſitio.
[5.1.10.] DECIMVM.
[5.1.11.] VNDECIMVM.
[5.1.12.] DVODECIMVM.
[Item 5.2.]
[5.2.1.] THEOR.I. II. ET III.
[5.2.2.] THEOREM. IIII.
[5.2.3.] THEOR.V. ET VI.
[5.2.4.] THEOR. VII. VIII. IX.X. XI. XII. XIII.
[5.2.5.] THEOREM. XIIII.
[5.2.6.] THEOR. XV.
[5.2.7.] THEOREM. XVI.
[5.2.8.] THEOR. XVII.
[5.2.9.] THEOREM. XVIII.
[5.2.10.] THEOREM. XIX.
[5.2.11.] THEOREM. XX.
[5.2.12.] THEOREM. XXI.
[5.2.13.] THEOREM. XXII. XXIII.
[6.] PHYSICA, ET MATHEMATICA RESPONSA. FO. BAPTISTAE BεNεDICTI PATRITII Veneti, Philoſophi Mathematici.
[Item 6.1.]
[Item 6.2.]
[Item 6.3.]
[Item 6.4.]
[Item 6.5.]
[Item 6.6.]
[Item 6.7.]
[Item 6.8.]
[Item 6.9.]
< >
page |< < (259) of 445 > >|
    <echo version="1.0">
      <text type="book" xml:lang="la">
        <div xml:id="echoid-div7" type="body" level="1" n="1">
          <div xml:id="echoid-div477" type="chapter" level="2" n="6">
            <div xml:id="echoid-div509" type="section" level="3" n="6">
              <div xml:id="echoid-div510" type="letter" level="4" n="2">
                <p>
                  <s xml:id="echoid-s3234" xml:space="preserve">
                    <pb o="259" rhead="EPISTOL AE." n="271" file="0271" xlink:href="http://echo.mpiwg-berlin.mpg.de/zogilib?fn=/permanent/library/163127KK/pageimg/0271"/>
                  quantulum dicta corpora, & ita illorum colore afficitur, vbi verò non penetrat, non
                    <lb/>
                  coloratur colore corporis illius.</s>
                </p>
                <p>
                  <s xml:id="echoid-s3235" xml:space="preserve">Sed vt ad propoſitum redeamus, dico lum en tantum eſſe viſus obiectum, quod ſi
                    <lb/>
                  colore eſt imbutum, aut tale eſt ratione color ris lucis, quæ eum mittit, aut ratione me
                    <lb/>
                  dij per quem tranſit, aut ratione corporis, vnde reflectitur, etſi ſuperficies corporis
                    <lb/>
                  vnde lumen reflectitur eſſet omnino priuata colore, ſub aſpectum non caderet, vt
                    <lb/>
                  etiam cum huiuſmodi ſuperficies læuigata, & polita eſt ſecundum
                    <reg norm="continuitatem" type="context">continuitatẽ</reg>
                  ſua-
                    <lb/>
                  rum partium, videlicet, vt ſpeculi radio tamen non profundante, & ideo perfectiffi
                    <lb/>
                  morum quorundam ſpeculorum ſuperficies non cernuntur, ſed lumen tantum re-
                    <lb/>
                  flexum, colore alicuius alterius ſuperficiei, aut à luce, corporis lucidi, aut à me-
                    <lb/>
                  dio per quem tranſit, conſpicitur. </s>
                  <s xml:id="echoid-s3236" xml:space="preserve">Ego verò non aſſero colorem non eſſe quid di-
                    <lb/>
                  uerſum à lumine, ſed imagineris lumen eſſe veluti animam, aut ſubſtantiam & colo
                    <lb/>
                  rem corporis formam accidentalem, cum nullum lumen à ſenſu viſus percipi poſ-
                    <lb/>
                  ſit, quod aliquo modo colore non ſit imbutum: </s>
                  <s xml:id="echoid-s3237" xml:space="preserve">& eundem reſpectum quem ſonus
                    <lb/>
                  ad auditum, lumen ad oculum habet, quia vt ſonus ſecundum eam velocitatem, quæ
                    <lb/>
                  à motione aeris, aut aquæ, ex colliſione
                    <reg norm="aliorum" type="context">aliorũ</reg>
                  corporum producitur ad euitan dum
                    <lb/>
                  vacuum, a cutus, vel grauis ſentitur, ita lumen originem ducens à corpore lucido per
                    <lb/>
                  medium diaphanum aeris, aut aquæ, aut alterius huiuſmodi corporis ad oculum tran
                    <lb/>
                  ſit colorem lucis, aut medij per quod tranſit, aut vnde reflectitur induit.</s>
                </p>
                <p>
                  <s xml:id="echoid-s3238" xml:space="preserve">Quod verò Luna nullum ex ſe habeat lumen, ſufficiens inditium eſt nos ipſam
                    <lb/>
                  tantò magis obſcuram videre, quantò magis in cono vmbræ terræ immergitur, &
                    <lb/>
                  ſi eo tempore ipſam videmus rubeo colore affectam, hoc enim accidit, quia radij ſo
                    <lb/>
                  lares vndequaque refranguntur à vaporibus ipſam terram circundantibus, quæ qui-
                    <lb/>
                  dem refractio fit verſus axem coni vmbræ terræ, </s>
                  <s xml:id="echoid-s3239" xml:space="preserve">& propterea vmbra dicti coni non
                    <lb/>
                  eſt æqualiter obſcura, ſeu tenebroſa, circa vero
                    <reg norm="axem" type="context">axẽ</reg>
                  ipſius coni, magis quam circa eius
                    <lb/>
                    <reg norm="circunferentiam" type="context context">circũferentiã</reg>
                  , obſcura
                    <reg norm="verum" type="wordlist">vr̃</reg>
                  , & quia corpus lunare tale eſt, vt facillimè recipiat
                    <reg norm="qualecum" type="context">qualecũ</reg>
                    <lb/>
                  que lumen, quod etiam manifeſtè videtur dum ipſa Luna reperitur ſecundum lon-
                    <lb/>
                  gitudinem inter Solem, & Venerem, quod pars Lunæ lumine Solis deſtituta, à lumi
                    <lb/>
                  ne Veneris aliquantulum illuſtratur, quod ego ſæpè vidi, & multis oſtendi. </s>
                  <s xml:id="echoid-s3240" xml:space="preserve">Propte-
                    <lb/>
                  rea dum ipſa Luna in cono vmbræ terræ reperitur adhuc videtur. </s>
                  <s xml:id="echoid-s3241" xml:space="preserve">Rubedo etiam il-
                    <lb/>
                  la nubium poſt Solis occaſum, vel ante ortum, aliunde non prouenit, niſi à qualitate
                    <lb/>
                    <reg norm="vaporum" type="context">vaporũ</reg>
                  , per quos ſolares radij tranſeunt, à quibus vaporibus, tali colore ipſi radij
                    <lb/>
                  afficiuntur, eomet modo quo radius, cuiuſuis corporis lucidit,
                    <reg norm="tranſiens" type="context">trãſiens</reg>
                  per vitrum, ſeu
                    <lb/>
                  aliud diaphanum coloratum.</s>
                </p>
              </div>
            </div>
          </div>
        </div>
      </text>
    </echo>