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
>
201
202
203
204
205
206
207
208
209
210
<
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
="
040/01/208.jpg
"
pagenum
="
190
"/>
check that is immoveable, they ſhall fly out with great
<
lb
/>
ſity: the ſame effect following in that caſe, which we ſee dayly
<
lb
/>
to fall out in a boat that running a ſwift courſe, runs a-ground, or
<
lb
/>
meets with ſome ſudden ſtop, for all thoſe in the boat, being
<
lb
/>
<
arrow.to.target
n
="
marg385
"/>
<
lb
/>
prized, ſtumble forwards, and fall towards the part whither the
<
lb
/>
boat ſteered. </
s
>
<
s
>And in caſe the Earth ſhould meet with ſuch a
<
lb
/>
check, as ſhould be able to reſiſt and arreſt its
<
emph
type
="
italics
"/>
vertigo,
<
emph.end
type
="
italics
"/>
then indeed
<
lb
/>
I do believe that not onely beaſts, buildings and cities, but
<
lb
/>
tains, lakes and ſeas would overturn, and the globe it ſelf would
<
lb
/>
go near to ſhake in pieces; but nothing of all this concerns our
<
lb
/>
preſent purpoſe, for we ſpeak of what may follow to the motion
<
lb
/>
of the Earth, it being turn'd round uniformly, and quietly about
<
lb
/>
its own centre, howbeit with a great velocity. </
s
>
<
s
>That likewiſe
<
lb
/>
which you ſay of the ſlings, is true in part; but was not alledged
<
lb
/>
by
<
emph
type
="
italics
"/>
Salviatus,
<
emph.end
type
="
italics
"/>
as a thing that punctually agreed with the matter
<
lb
/>
whereof we treat, but onely, as an example, for ſo in groſs it may
<
lb
/>
prompt us in the more accurate conſideration of that point,
<
lb
/>
ther, the velocity increaſing at any rate, the cauſe of the
<
lb
/>
ction doth increaſe at the ſame rate: ſo that
<
emph
type
="
italics
"/>
v. </
s
>
<
s
>g.
<
emph.end
type
="
italics
"/>
if a wheel of
<
lb
/>
ten yards diameter, moving in ſuch a manner that a point of its
<
lb
/>
circumference will paſs an hundred yards in a minute of an hour,
<
lb
/>
and ſo hath an
<
emph
type
="
italics
"/>
impetus
<
emph.end
type
="
italics
"/>
able to extrude a ſtone, that ſame
<
emph
type
="
italics
"/>
impetus
<
emph.end
type
="
italics
"/>
<
lb
/>
ſhall be increaſed an hundred thouſand times in a wheel of a million
<
lb
/>
of yards diameter; the which
<
emph
type
="
italics
"/>
Salviatus
<
emph.end
type
="
italics
"/>
denieth, and I incline to his
<
lb
/>
opinion; but not knowing the reaſon thereof, I have requeſted it
<
lb
/>
of him, and ſtand impatiently expecting it.</
s
>
</
p
>
<
p
type
="
margin
">
<
s
>
<
margin.target
id
="
marg385
"/>
<
emph
type
="
italics
"/>
Graming the
<
lb
/>
urnal
<
emph.end
type
="
italics
"/>
vertigo
<
emph
type
="
italics
"/>
of
<
lb
/>
the Earth, & that
<
lb
/>
by ſome ſudden ſtop
<
lb
/>
or obſtacle it were
<
lb
/>
arreſted, houſes,
<
lb
/>
mountains
<
lb
/>
ſelves, and perhaps
<
lb
/>
the whole Globe
<
lb
/>
would be ſhaken n
<
lb
/>
pieces.
<
emph.end
type
="
italics
"/>
</
s
>
</
p
>
<
p
type
="
main
">
<
s
>SALV. </
s
>
<
s
>I am ready to give you the beſt ſatisfaction, that my
<
lb
/>
abilities will give leave: And though in my firſt diſcourſe you
<
lb
/>
thought that I had enquired into things eſtranged from our
<
lb
/>
poſe, yet nevertheleſſe I believe that in the ſequel of the diſpute,
<
lb
/>
you will find that they do not prove ſo. </
s
>
<
s
>Therefore let
<
emph
type
="
italics
"/>
Sagredus
<
emph.end
type
="
italics
"/>
<
lb
/>
tell me wherein he hath obſerved that the reſiſtance of any
<
lb
/>
able to motion doth conſiſt.</
s
>
</
p
>
<
p
type
="
main
">
<
s
>SAGR. </
s
>
<
s
>I ſee not for the preſent that the moveable hath any
<
lb
/>
internal reſiſtance to motion, unleſſe it be its natural inclination
<
lb
/>
and propenſion to the contrary motion, as in grave bodies, that
<
lb
/>
have a propenſion to the motion downwards, the reſiſtance is to
<
lb
/>
the motion upwards; and I ſaid an internal reſiſtance, becauſe
<
lb
/>
of this, I think, it is you intend to ſpeak, and not of the external
<
lb
/>
reſiſtances, which are many and accidental.</
s
>
</
p
>
<
p
type
="
main
">
<
s
>SALV. </
s
>
<
s
>It is that indeed I mean, and your nimbleneſſe of wit
<
lb
/>
hath been too hard for my craftineſſe, but if I have been too
<
lb
/>
ſhort in asking the queſtion, I doubt whether
<
emph
type
="
italics
"/>
Sagredus
<
emph.end
type
="
italics
"/>
hath been
<
lb
/>
full enough in his anſwer to ſatisſie the demand; and whether
<
lb
/>
there be not in the moveable, beſides the natural inclination to the </
s
>
</
p
>
</
chap
>
</
body
>
</
text
>
</
archimedes
>