Salusbury, Thomas
,
Mathematical collections and translations (Tome I)
,
1667
Text
Text Image
Image
XML
Thumbnail overview
Document information
None
Concordance
Figures
Thumbnails
List of thumbnails
<
1 - 10
11 - 20
21 - 30
31 - 40
41 - 50
51 - 60
61 - 70
71 - 80
81 - 90
91 - 100
101 - 110
111 - 120
121 - 130
131 - 140
141 - 150
151 - 160
161 - 170
171 - 180
181 - 190
191 - 200
201 - 210
211 - 220
221 - 230
231 - 240
241 - 250
251 - 260
261 - 270
271 - 280
281 - 290
291 - 300
301 - 310
311 - 320
321 - 330
331 - 340
341 - 350
351 - 360
361 - 370
371 - 380
381 - 390
391 - 400
401 - 410
411 - 420
421 - 430
431 - 440
441 - 450
451 - 460
461 - 470
471 - 480
481 - 490
491 - 500
501 - 510
511 - 520
521 - 530
531 - 540
541 - 550
551 - 560
561 - 570
571 - 580
581 - 590
591 - 600
601 - 610
611 - 620
621 - 630
631 - 640
641 - 650
651 - 660
661 - 670
671 - 680
681 - 690
691 - 700
701 - 701
>
181
182
183
184
185
186
187
188
189
190
<
1 - 10
11 - 20
21 - 30
31 - 40
41 - 50
51 - 60
61 - 70
71 - 80
81 - 90
91 - 100
101 - 110
111 - 120
121 - 130
131 - 140
141 - 150
151 - 160
161 - 170
171 - 180
181 - 190
191 - 200
201 - 210
211 - 220
221 - 230
231 - 240
241 - 250
251 - 260
261 - 270
271 - 280
281 - 290
291 - 300
301 - 310
311 - 320
321 - 330
331 - 340
341 - 350
351 - 360
361 - 370
371 - 380
381 - 390
391 - 400
401 - 410
411 - 420
421 - 430
431 - 440
441 - 450
451 - 460
461 - 470
471 - 480
481 - 490
491 - 500
501 - 510
511 - 520
521 - 530
531 - 540
541 - 550
551 - 560
561 - 570
571 - 580
581 - 590
591 - 600
601 - 610
611 - 620
621 - 630
631 - 640
641 - 650
651 - 660
661 - 670
671 - 680
681 - 690
691 - 700
701 - 701
>
page
|<
<
of 701
>
>|
<
archimedes
>
<
text
>
<
body
>
<
chap
>
<
p
type
="
main
">
<
s
>
<
pb
xlink:href
="
040/01/225.jpg
"
pagenum
="
207
"/>
ſed to make its vibrations ſucceſſively more and more frequent;
<
lb
/>
and conſequently is able to bring a continual impediment to the
<
lb
/>
plummet C; and for a proof that this is ſo, if we do but obſerve
<
lb
/>
the thread A C, we ſhall ſee it diſtended not directly, but in an
<
lb
/>
arch; and if inſtead of the thread we take a chain, we ſhall
<
lb
/>
cern the effect more perſectly; and eſpecially removing the
<
lb
/>
<
arrow.to.target
n
="
marg412
"/>
<
lb
/>
vity C, to a conſiderable diſtance from the perpendicular A B, for
<
lb
/>
that the chain being compoſed of many looſe particles, and each of
<
lb
/>
them of ſome weight, the arches A E C, and A F D, will appear
<
lb
/>
notably incurvated. </
s
>
<
s
>By reaſon therefore, that the parts of the
<
lb
/>
chain, according as they are neerer to the point A, deſire to make
<
lb
/>
their vibrations more frequent, they permit not the lower parts of
<
lb
/>
the ſaid chain to ſwing ſo far as naturally they would: and by
<
lb
/>
continual detracting from the vibrations of the plummet C, they
<
lb
/>
finally make it ceaſe to move, although the impediment of the air
<
lb
/>
might be removed.</
s
>
</
p
>
<
p
type
="
margin
">
<
s
>
<
margin.target
id
="
marg410
"/>
<
emph
type
="
italics
"/>
The vibrations
<
lb
/>
of the ſame
<
emph.end
type
="
italics
"/>
<
lb
/>
dulum
<
emph
type
="
italics
"/>
are made
<
lb
/>
with the ſame
<
lb
/>
quency, whether
<
lb
/>
they be ſmall or
<
lb
/>
great.
<
emph.end
type
="
italics
"/>
</
s
>
</
p
>
<
p
type
="
margin
">
<
s
>
<
margin.target
id
="
marg411
"/>
<
emph
type
="
italics
"/>
The cauſe which
<
lb
/>
impedeth the
<
emph.end
type
="
italics
"/>
<
lb
/>
dulum,
<
emph
type
="
italics
"/>
and
<
lb
/>
ceth it to reſt.
<
emph.end
type
="
italics
"/>
</
s
>
</
p
>
<
p
type
="
margin
">
<
s
>
<
margin.target
id
="
marg412
"/>
<
emph
type
="
italics
"/>
The thread or
<
lb
/>
chain to which a
<
emph.end
type
="
italics
"/>
<
lb
/>
pendulum
<
emph
type
="
italics
"/>
is
<
lb
/>
ned, maketh an
<
lb
/>
arch, and doth not
<
lb
/>
ſtretch it ſelfe
<
lb
/>
ſtreight out in its
<
lb
/>
vibrations.
<
emph.end
type
="
italics
"/>
</
s
>
</
p
>
<
p
type
="
main
">
<
s
>SAGR. </
s
>
<
s
>The books are now come; here take them
<
emph
type
="
italics
"/>
Simplicius,
<
emph.end
type
="
italics
"/>
<
lb
/>
and find the place you are in doubt of.</
s
>
</
p
>
<
p
type
="
main
">
<
s
>SIMP. See, here it is where he beginneth to argue againſt the
<
lb
/>
diurnal motion of the Earth, he having firſt confuted the annual.
<
lb
/>
<
emph
type
="
italics
"/>
Motus terræ annuus aſſerrere
<
emph.end
type
="
italics
"/>
Copernicanos
<
emph
type
="
italics
"/>
cogit converſionem
<
lb
/>
juſdem quotidianam; alias idem terræ Hemiſphærium continenter
<
lb
/>
ad Solem eſſet converſum obumbrato ſemper averſo. [In Engliſh
<
lb
/>
thus:]
<
emph.end
type
="
italics
"/>
The annual motion of the Earth doth compell the
<
emph
type
="
italics
"/>
<
lb
/>
pernicans
<
emph.end
type
="
italics
"/>
to aſſert the daily converſion thereof; otherwiſe the
<
lb
/>
ſame Hemiſphere of the Earth would be continually turned
<
lb
/>
wards the Sun, the ſhady ſide being always averſe. </
s
>
<
s
>And ſo one
<
lb
/>
half of the Earth would never come to ſee the Sun.</
s
>
</
p
>
<
p
type
="
main
">
<
s
>SALV. </
s
>
<
s
>I find at the very ſirſt ſight, that this man hath not rightly
<
lb
/>
apprehended the
<
emph
type
="
italics
"/>
Copernican Hypotheſis,
<
emph.end
type
="
italics
"/>
for if he had but taken
<
lb
/>
notice how he alwayes makes the Axis of the terreſtrial Globe
<
lb
/>
perpetually parallel to it ſelf, he would not have ſaid, that one
<
lb
/>
half of the Earth would never ſee the Sun, but that the year
<
lb
/>
would be one entire natural day, that is, that thorow all parts of
<
lb
/>
the Earth there would be ſix moneths day, and ſix moneths night,
<
lb
/>
as it now befalleth to the inhabitants under the Pole, but let
<
lb
/>
this miſtake be forgiven him, and let us come to what
<
lb
/>
neth.</
s
>
</
p
>
<
p
type
="
main
">
<
s
>SIMP. </
s
>
<
s
>It followeth,
<
emph
type
="
italics
"/>
Hanc autem gyrationem Terræ
<
lb
/>
poſſibilem eſſe ſic demonſtramus.
<
emph.end
type
="
italics
"/>
Which ſpeaks in Engliſh thus:
<
lb
/>
That this gyration of the Earth is impoſſible we thus demonſtrate.
<
lb
/>
</
s
>
<
s
>That which enſueth is the declaration of the following figure,
<
lb
/>
wherein is delineated many deſcending grave bodies, and
<
lb
/>
ing light bodies, and birds that fly too and again in the air, &c.</
s
>
</
p
>
<
p
type
="
main
">
<
s
>SAGR. </
s
>
<
s
>Let us ſee them, I pray you. </
s
>
<
s
>Oh! what fine figures, </
s
>
</
p
>
</
chap
>
</
body
>
</
text
>
</
archimedes
>