Salusbury, Thomas
,
Mathematical collections and translations (Tome I)
,
1667
Text
Text Image
Image
XML
Thumbnail overview
Document information
None
Concordance
Figures
Thumbnails
Page concordance
<
1 - 30
31 - 60
61 - 90
91 - 120
121 - 150
151 - 180
181 - 210
211 - 240
241 - 270
271 - 300
301 - 330
331 - 360
361 - 390
391 - 420
421 - 450
451 - 480
481 - 510
511 - 540
541 - 570
571 - 600
601 - 630
631 - 660
661 - 690
691 - 701
>
Scan
Original
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
<
1 - 30
31 - 60
61 - 90
91 - 120
121 - 150
151 - 180
181 - 210
211 - 240
241 - 270
271 - 300
301 - 330
331 - 360
361 - 390
391 - 420
421 - 450
451 - 480
481 - 510
511 - 540
541 - 570
571 - 600
601 - 630
631 - 660
661 - 690
691 - 701
>
page
|<
<
of 701
>
>|
<
archimedes
>
<
text
>
<
body
>
<
chap
>
<
p
type
="
main
">
<
s
>
<
pb
xlink:href
="
040/01/345.jpg
"
pagenum
="
325
"/>
thoſe admirable conſequences which are derived from the Earths
<
lb
/>
<
arrow.to.target
n
="
marg595
"/>
<
lb
/>
annual motion, to the other Planets, that is to ſay, of the ^{*}
<
lb
/>
<
arrow.to.target
n
="
marg596
"/>
<
lb
/>
ons and retrogradations of the three uppermoſt in particular; he
<
lb
/>
ſubjoyneth, that this apparent mutation (which is diſcerned more
<
lb
/>
in
<
emph
type
="
italics
"/>
Mars
<
emph.end
type
="
italics
"/>
than in
<
emph
type
="
italics
"/>
Jupiter,
<
emph.end
type
="
italics
"/>
by reaſon
<
emph
type
="
italics
"/>
Jupiter
<
emph.end
type
="
italics
"/>
is more remote, and
<
lb
/>
yet leſſe in
<
emph
type
="
italics
"/>
Saturn,
<
emph.end
type
="
italics
"/>
by reaſon it is more remote than
<
emph
type
="
italics
"/>
Jupiter
<
emph.end
type
="
italics
"/>
) in
<
lb
/>
the fixed Stars, did remain imperceptible, by reaſon of their
<
lb
/>
immenſe remoteneſſe from us, in compariſon of the diſtances of
<
lb
/>
<
emph
type
="
italics
"/>
Jupiter
<
emph.end
type
="
italics
"/>
or
<
emph
type
="
italics
"/>
Saturn.
<
emph.end
type
="
italics
"/>
Here the Adverſaries of this opinion riſe up,
<
lb
/>
and ſuppoſing that fore-named imperceptibility of
<
emph
type
="
italics
"/>
Copernicus,
<
emph.end
type
="
italics
"/>
as
<
lb
/>
if it had been taken by him, for a real and abſolute thing of
<
lb
/>
thing, and adding, that a fixed Star of one of the leſſer
<
lb
/>
tudes, is notwithſtanding perceptible, ſeeing that it cometh
<
lb
/>
der the ſence of ſeeing, they go on to calculate with the
<
lb
/>
vention of other falſe aſſumptions, and concluding that it is
<
lb
/>
ſary by the
<
emph
type
="
italics
"/>
Copernican
<
emph.end
type
="
italics
"/>
Doctrine, to admit, that a fixed Star is much
<
lb
/>
bigger than the whole grand Orb. </
s
>
<
s
>Now to diſcover the vanity
<
lb
/>
<
arrow.to.target
n
="
marg597
"/>
<
lb
/>
of this their whole proceeding, I ſhall ſhew that a fixed Star of the
<
lb
/>
ſixth magnitude, being ſuppoſed to be no bigger than the Sun,
<
lb
/>
one may thence conclude with true demonſtrations, that the
<
lb
/>
ſtance of the ſaid fixed Stars from us, cometh to be ſo great, that
<
lb
/>
the annual motion of the Earth, which cauſeth ſo great and
<
lb
/>
notable variations in the Planets, appears ſcarce obſervable in
<
lb
/>
them; and at the ſame time, I will diſtinctly ſhew the groſs
<
lb
/>
fallacies, in the aſſumptions of
<
emph
type
="
italics
"/>
Copernicus
<
emph.end
type
="
italics
"/>
his Adverſaries.</
s
>
</
p
>
<
p
type
="
margin
">
<
s
>
<
margin.target
id
="
marg594
"/>
<
emph
type
="
italics
"/>
Litigious Lawyers
<
lb
/>
that are
<
lb
/>
ed in an ill cauſe,
<
lb
/>
keep cloſe to ſome
<
lb
/>
expreſſion fallen
<
lb
/>
from the adverſe
<
lb
/>
party at unawares.
<
emph.end
type
="
italics
"/>
</
s
>
</
p
>
<
p
type
="
margin
">
<
s
>
<
margin.target
id
="
marg595
"/>
* Or progreſſions.</
s
>
</
p
>
<
p
type
="
margin
">
<
s
>
<
margin.target
id
="
marg596
"/>
<
emph
type
="
italics
"/>
The apparent
<
lb
/>
diverſity of motion
<
lb
/>
in the Planets, is
<
lb
/>
inſenſible in the
<
lb
/>
fixed Start.
<
emph.end
type
="
italics
"/>
</
s
>
</
p
>
<
p
type
="
margin
">
<
s
>
<
margin.target
id
="
marg597
"/>
<
emph
type
="
italics
"/>
Suppoſing that a
<
lb
/>
fixed Star of the
<
lb
/>
ſixth magnitude is
<
lb
/>
no bigger than the
<
emph.end
type
="
italics
"/>
<
lb
/>
Sun,
<
emph
type
="
italics
"/>
the diverſitie
<
lb
/>
which is ſo great
<
lb
/>
in the Planets, in
<
lb
/>
the fixed Stars is
<
lb
/>
almost inſenſible.
<
emph.end
type
="
italics
"/>
</
s
>
</
p
>
<
p
type
="
main
">
<
s
>And firſt of all, I ſuppoſe with the ſaid
<
emph
type
="
italics
"/>
Copernicus,
<
emph.end
type
="
italics
"/>
and alſo
<
lb
/>
<
arrow.to.target
n
="
marg598
"/>
<
lb
/>
with his oppoſers, that the Semidiameter of the grand Orb, which
<
lb
/>
is the diſtance of the Earth from the Sun, containeth 1208
<
lb
/>
diameters of the ſaid Earth. </
s
>
<
s
>Secondly, I premiſe with the
<
lb
/>
ance aforeſaid, and of truth, that the ^{*} apparent diameter of the
<
lb
/>
<
arrow.to.target
n
="
marg599
"/>
<
lb
/>
Sun in its mean diſtance, to be about half a degree, that is, 30.
<
lb
/>
<
emph
type
="
italics
"/>
min. </
s
>
<
s
>prim.
<
emph.end
type
="
italics
"/>
which are 1800. ſeconds, that is, 108000. thirds.
<
lb
/>
</
s
>
<
s
>And becauſe the apparent Diameter of a fixed Star of the firſt
<
lb
/>
<
arrow.to.target
n
="
marg600
"/>
<
lb
/>
magnitude, is no more than 5. ſeconds, that is, 300. thirds, and
<
lb
/>
the Diameter of a fixed Star of the ſixth magnitude, 50. thirds,
<
lb
/>
(and herein is the greateſt errour of the
<
emph
type
="
italics
"/>
Anti-Copernicans
<
emph.end
type
="
italics
"/>
)
<
lb
/>
<
arrow.to.target
n
="
marg601
"/>
<
lb
/>
fore the Diameter of the Sun, containeth the Diameter of a
<
lb
/>
fixed Star of the ſixth magnitude 2160 times. </
s
>
<
s
>And therefore
<
lb
/>
if a fixed Star of the ſixth magnitude, were ſuppoſed to be really
<
lb
/>
equal to the Sun, and not bigger, which is the ſame as to ſay, if
<
lb
/>
the Sun were ſo far removed, that its Diameter ſhould ſeem to
<
lb
/>
be one of the 2160. parts of what it now appeareth, its diſtance
<
lb
/>
ought of neceſſity to be 2160. times greater than now in effect it
<
lb
/>
is, which is as much as to ſay, that the diſtance of the fixed Stars
<
lb
/>
of the ſixth magnitude, is 2160. Semidiameters of the grand </
s
>
</
p
>
</
chap
>
</
body
>
</
text
>
</
archimedes
>