Archimedes, Archimedis De iis qvae vehvntvr in aqva libri dvo

Table of contents

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[11.] PROPOSITIO IIII.
[12.] PROPOSITIO V.
[13.] PROPOSITIO VI.
[14.] PROPOSITIO VII.
[15.] POSITIO II.
[16.] COMMENTARIVS.
[17.] PROPOSITIO VIII.
[18.] COMMENTARIVS.
[19.] PROPOSITIO IX.
[20.] COMMENTARIVS.
[21.] ARCHIMEDIS DE IIS QVAE VEHVNTVR IN AQVA LIBER SECVNDVS. CVM COMMENTARIIS FEDERICI COMMANDINI VRBINATIS. PROPOSITIO I.
[22.] PROPOSITIO II.
[23.] COMMENTARIVS.
[24.] PROPOSITIO III.
[25.] PROPOSITIO IIII.
[26.] COMMENTARIVS.
[27.] PROPOSITIO V.
[28.] COMMENTARIVS.
[29.] PROPOSITIO VI.
[30.] COMMENTARIVS.
[31.] LEMMAI.
[32.] LEMMA II.
[33.] LEMMA III.
[34.] LEMMA IIII.
[35.] PROPOSITIO VII.
[36.] PROPOSITIO VIII.
[37.] COMMENTARIVS.
[38.] PROPOSITIO IX.
[39.] COMMENTARIVS.
[40.] PROPOSITIO X.
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4517DE IIS QVAE VEH. IN AQVA.
SIT portio, qualis dicta eſt, & in humidum demittatur,
ſicuti
diximus, adeo ut baſis eius in uno puncto contingat
humidum
.
demonſtrandum eſtnon manere ipſam portio-
nem
, ſed reuoluiita, ut baſis nullo modo humidi ſuperſicie
11A contingat.
Secta enim ipſa per axem, plano ad ſuper ſiciem
humidi
recto, ſit ſectio ſuperſiciei portionis a p o l re-
ctãguli
coni ſe
26[Figure 26] ctio:
ſuperſi-
ciei
humidi ſe-
ctio
ſit a s:
axis
autem
portio-
nis
, ac ſectio-
nis
diameter n
o
:
& ſccetur in
f
quidẽ ita, ut
o
f ſit dupla ip
ſius
ſn;
in ω ue
ro
, ut n o ad
f
ω eandem ha
beat
proportionem, quam quindecim ad quatuor:
& ipſi
n
o ad rectos angulos ducatur ω k.
Itaque quoniam n o
22B ad f ω maiorem habet proportionem, quàm ad eam, quæ
uſque
ad axem;
ſit ei, quæ uſque ad axem æqualis f b: & du
catur
p c quidem ipſi a s æquidiſtans, cõtingensq;
ſectio-
nem
a p o l in p;
pi uero æquidiſtans ipſi n o: & primum
ſecet
pi ipſam κ ω in h.
Quoniã ergo in portione a p o l,
33C quæ continetur recta linea, &
rectanguli coni ſectione, κ ω
quidem
æ quidiſtans eſtipſi a l;
p i uero diametro æquidi-
ſtat
:
ſecaturq; ab ipſa κ ω in h: & a s æquidiſtat contingen-
ti
in p:
neceſſarium eſtipſam p i ad p h uel ean dem pro-
portionem
habere, quam habet n ω ad ω o, uel maiorem:
hocenim iam demonſtratum eſt. At uero n ω ſeſquialtera
eſt
ipſius ω o.
& pi igitur uel ſeſquialtera eſt ipſius h p;
uel
maior, quàm ſeſquialtera.
Quare ph ipſius h i aut du
44D

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