Galilei, Galileo
,
The systems of the world
,
1661
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065/01/081.jpg
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<
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>SIMPL. </
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>
<
s
>It is ſo; and I have oftentimes wiſh'd that the Air
<
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would grow thicker, that I might be able to ſee that ſame light
<
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more plainly; but it ever diſappeared before dark night.</
s
>
</
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<
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<
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>SALV. </
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>
<
s
>You know then very certainly, that in the depth of
<
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night, that light would be more conſpicuous.</
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>
</
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<
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<
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>SIMPL. </
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>
<
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>I do ſo; and alſo more than that, if one could but
<
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/>
take away the great light of the creſcent illuminated by the Sun,
<
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the preſence of which much obſcureth the other leſſer.</
s
>
</
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<
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<
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>SALV. Why, doth it not ſometimes come to paſs, that one may
<
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/>
in a very dark night ſee the whole face of the Moon, without
<
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ing at all illuminated by the Sun?</
s
>
</
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<
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<
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>SIMPL. </
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>
<
s
>I know not whether this ever happeneth, ſave onely
<
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in the total Ecclipſes of the Moon.</
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>
</
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<
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type
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<
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>SALV. Why, at that time this its light would appear very
<
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clear, being in a moſt obſcure
<
emph
type
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italics
"/>
medium,
<
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"/>
and not darkned by the
<
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clarity of the luminous creſcents: but in that poſition, how light
<
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did it appear to you?</
s
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</
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>
<
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type
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<
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>SIMPL. </
s
>
<
s
>I have ſometimes ſeen it of the colour of braſs, and a
<
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/>
little whitiſh; but at other times it hath been ſo obſcure, that I
<
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/>
have wholly loſt the ſight of it.</
s
>
</
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>
<
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type
="
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">
<
s
>SALV. </
s
>
<
s
>How then can that light be ſo natural, which you ſee ſo
<
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/>
cleer in the cloſe of the twilight, notwithſtanding the impediment
<
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of the great and contiguous ſplendor of the creſcents; and which
<
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again, in the more obſcure time of night, all other light removed,
<
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/>
appears not at all?</
s
>
</
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>
<
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type
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">
<
s
>SIMPL. </
s
>
<
s
>I have heard of ſome that believed that ſame light to
<
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/>
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
>
</
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>
<
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type
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">
<
s
>SALV. </
s
>
<
s
>And this likewiſe is a vanity; becauſe in the time of
<
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/>
its total obſcuration, it ought to appear more ſhining than ever;
<
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/>
for you cannot ſay, that the ſhadow of the Earth intercepts the
<
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/>
ſight of
<
emph
type
="
italics
"/>
Venus,
<
emph.end
type
="
italics
"/>
or the other Stars. </
s
>
<
s
>But to ſay true, it is not at
<
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/>
that inſtant wholly deprived thereof, for that the Terreſtrial
<
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/>
miſphere, which in that time looketh towards the Moon, is that
<
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/>
where it is night, that is, an intire privation of the light of the Sun.
<
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/>
</
s
>
<
s
>And if you but diligently obſerve, you will very ſenſibly perceive,
<
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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
<
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nated by the Suns light do encreaſe: ſo likewiſe the ſplendor to
<
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our ſeeming encreaſeth, which from her is reflected towards us;
<
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thus the Moon, whilſt it is ſharp-forked, and that by being between
<
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the Sun and the Earth, it diſcovereth a very great part of the
<
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/>
<
arrow.to.target
n
="
marg194
"/>
<
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reſtrial Hemiſphere illuminated, appeareth very clear: and
<
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/>
ing from the Sun, and paſſing towards the ^{*}Quadrature, you
<
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/>
may ſee the ſaid light by degrees to grow dim; and after the </
s
>
</
p
>
</
chap
>
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>
</
text
>
</
archimedes
>