Galilei, Galileo, The systems of the world, 1661

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    <archimedes>
      <text>
        <body>
          <chap>
            <p type="main">
              <s>
                <pb xlink:href="065/01/069.jpg" pagenum="63"/>
              of a particular perſon, by reaſon of its great diſtance would be
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              viſible, as I have ſaid before.</s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg169"/>
                <emph type="italics"/>
              The reflex light
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              of uneven bodies, is
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              more univerſal
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              than that of the
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              ſmooth, & why.
                <emph.end type="italics"/>
              </s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg170"/>
                <emph type="italics"/>
              The Moon, if it
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              were ſmooth and
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              ſleek, would be
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              viſible.
                <emph.end type="italics"/>
              </s>
            </p>
            <p type="main">
              <s>SIMPL. </s>
              <s>I am very apprehenſive of your diſcourſe; yet
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              thinks I am able to reſolve the ſame with very little trouble; and
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              eaſily to maintain, that the Moon is rotund and polite, and that it
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              reflects the Suns light unto us in manner of a glaſs; nor
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              fore ought the image of the Sun to be ſeen in the middle of it,
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              aſmuch as the ſpecies of the Sun it ſelf admits not its ſmall figure
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              to be ſeen at ſo great a diſtance, but the light produced by the
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              Sun may help us to conceive that it illuminateth the whole
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              nar Body: a like effect we may ſee in a plate gilded and well
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              polliſh'd, which touch't by a luminous body, appeareth to him
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              that beholds it at ſome diſtance to be all ſhining; and onely near
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              at hand one may diſcover in the middle of it the ſmall image of
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              the luminous body.”</s>
            </p>
            <p type="main">
              <s>SALV. </s>
              <s>Ingenuouſly confeſſing my dullneſs of apprehenſion,
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              I muſt tell you, that I underſtand not any thing of this your
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              courſe, ſave onely what concerns the gilt plate: and if you permit
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              me to ſpeak freely, I have a great conceit that you alſo underſtand
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              not the ſame, but have learnt by heart thoſe words written by ſome
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              one out of a deſire of contradiction, and to ſhew himſelf more
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              ligent than his adverſary; but it muſt be to thoſe, which to appear
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              alſo more wiſe, applaud that which they do not underſtand, and
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              entertain a greater conceit of perſons, the leſs they are by them
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              underſtood: and the writer himſelf may be one of thoſe (of which
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              there are many) who write what they do not underſtand, and
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                <arrow.to.target n="marg171"/>
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              conſequently underſtand not what they write. </s>
              <s>Therefore,
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              mitting the reſt, I reply, as to the gilt plate, that if it be flat and
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              not very big, it may appear at a diſtance very bright, whilſt a great
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              light beameth upon it, but yet it muſt be when the eye is in a
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              terminate line, namely in that of the reflex rays: and it will
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              pear the more ſhining, if it were
                <emph type="italics"/>
              v. </s>
              <s>g.
                <emph.end type="italics"/>
              of ſilver, by means of its
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              being burniſhed, and apt through the great denſity of the metal,
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              to receive a perfect poliſh. </s>
              <s>And though its ſuperficies, being very
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              well brightned, were not exactly plain, but ſhould have various
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              clinations, yet then alſo would its ſplendor be ſeen many ways;
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              namely, from as many places as the various reflections, made by
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              the ſeveral ſuperficies, do reach: for therefore are Diamonds
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                <arrow.to.target n="marg172"/>
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              ground to many ſides, that ſo their pleaſing luſtre might be beheld
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              from many places. </s>
              <s>But if the Plate were very big, though it ſhould
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              be all plain, yet would it not at a diſtance appear all over ſhining:
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              and the better to expreſs my ſelf, Let us ſuppoſe a very large gilt
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              plate expoſed to the Sun, it will ſhew to an eye far diſtant, the
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              image of the Sun, to occupy no more but a certain part of the ſaid
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              plate; to wit, that from whence the reflection of the incident </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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