Galilei, Galileo, The systems of the world, 1661

List of thumbnails

< >
81
81
82
82
83
83
84
84
85
85
86
86
87
87
88
88
89
89
90
90
< >
page |< < of 948 > >|
    <archimedes>
      <text>
        <body>
          <chap>
            <pb xlink:href="065/01/081.jpg" pagenum="75"/>
            <p type="main">
              <s>SIMPL. </s>
              <s>It is ſo; and I have oftentimes wiſh'd that the Air
                <lb/>
              would grow thicker, that I might be able to ſee that ſame light
                <lb/>
              more plainly; but it ever diſappeared before dark night.</s>
            </p>
            <p type="main">
              <s>SALV. </s>
              <s>You know then very certainly, that in the depth of
                <lb/>
              night, that light would be more conſpicuous.</s>
            </p>
            <p type="main">
              <s>SIMPL. </s>
              <s>I do ſo; and alſo more than that, if one could but
                <lb/>
              take away the great light of the creſcent illuminated by the Sun,
                <lb/>
              the preſence of which much obſcureth the other leſſer.</s>
            </p>
            <p type="main">
              <s>SALV. Why, doth it not ſometimes come to paſs, that one may
                <lb/>
              in a very dark night ſee the whole face of the Moon, without
                <lb/>
              ing at all illuminated by the Sun?</s>
            </p>
            <p type="main">
              <s>SIMPL. </s>
              <s>I know not whether this ever happeneth, ſave onely
                <lb/>
              in the total Ecclipſes of the Moon.</s>
            </p>
            <p type="main">
              <s>SALV. Why, at that time this its light would appear very
                <lb/>
              clear, being in a moſt obſcure
                <emph type="italics"/>
              medium,
                <emph.end type="italics"/>
              and not darkned by the
                <lb/>
              clarity of the luminous creſcents: but in that poſition, how light
                <lb/>
              did it appear to you?</s>
            </p>
            <p type="main">
              <s>SIMPL. </s>
              <s>I have ſometimes ſeen it of the colour of braſs, and a
                <lb/>
              little whitiſh; but at other times it hath been ſo obſcure, that I
                <lb/>
              have wholly loſt the ſight of it.</s>
            </p>
            <p type="main">
              <s>SALV. </s>
              <s>How then can that light be ſo natural, which you ſee ſo
                <lb/>
              cleer in the cloſe of the twilight, notwithſtanding the impediment
                <lb/>
              of the great and contiguous ſplendor of the creſcents; and which
                <lb/>
              again, in the more obſcure time of night, all other light removed,
                <lb/>
              appears not at all?</s>
            </p>
            <p type="main">
              <s>SIMPL. </s>
              <s>I have heard of ſome that believed that ſame light to
                <lb/>
              be participated to theſe creſcents from the other Stars, and in
                <lb/>
              ticular from
                <emph type="italics"/>
              Venus,
                <emph.end type="italics"/>
              the Moons neighbour.</s>
            </p>
            <p type="main">
              <s>SALV. </s>
              <s>And this likewiſe is a vanity; becauſe in the time of
                <lb/>
              its total obſcuration, it ought to appear more ſhining than ever;
                <lb/>
              for you cannot ſay, that the ſhadow of the Earth intercepts the
                <lb/>
              ſight of
                <emph type="italics"/>
              Venus,
                <emph.end type="italics"/>
              or the other Stars. </s>
              <s>But to ſay true, it is not at
                <lb/>
              that inſtant wholly deprived thereof, for that the Terreſtrial
                <lb/>
              miſphere, which in that time looketh towards the Moon, is that
                <lb/>
              where it is night, that is, an intire privation of the light of the Sun.
                <lb/>
              </s>
              <s>And if you but diligently obſerve, you will very ſenſibly perceive,
                <lb/>
              that like as the Moon, when it is ſharp-horned, doth give very little
                <lb/>
              light to the Earth; and according as in her the parts
                <lb/>
              nated by the Suns light do encreaſe: ſo likewiſe the ſplendor to
                <lb/>
              our ſeeming encreaſeth, which from her is reflected towards us;
                <lb/>
              thus the Moon, whilſt it is ſharp-forked, and that by being between
                <lb/>
              the Sun and the Earth, it diſcovereth a very great part of the
                <lb/>
                <arrow.to.target n="marg194"/>
                <lb/>
              reſtrial Hemiſphere illuminated, appeareth very clear: and
                <lb/>
              ing from the Sun, and paſſing towards the ^{*}Quadrature, you
                <lb/>
              may ſee the ſaid light by degrees to grow dim; and after the </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>