Archimedes, Archimedis De iis qvae vehvntvr in aqva libri dvo

Table of contents

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[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.]
[41. COMMENTARIVS.]
[42. LEMMA I.]
[43. LEMMA II.]
[44. LEMMA III.]
[45. LEMMA IIII.]
[46. LEMMA V.]
[47. LEMMA VI.]
[48. II.]
[49. III.]
[50. IIII.]
[51. V.]
[52. DEMONSTRATIO SECVNDAE PARTIS.]
[53. COMMENTARIVS.]
[54. DEMONSTRATIO TERTIAE PARTIS.]
[55. COMMENTARIVS.]
[56. DEMONSTRATIO QVARTAE PARTIS.]
[57. DEMONSTRATIO QVINT AE PARTIS.]
[58. FINIS LIBRORVM ARCHIMEDIS DE IIS, QVAE IN AQVA VEHVNTVR.]
[59. FEDERICI COMMANDINI VRBINATIS LIBER DE CENTRO GRAVITATIS SOLIDORV M.]
[60. CVM PRIVILEGIO IN ANNOS X. BONONIAE, Ex Officina Alexandri Benacii. M D LXV.]
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ARCHIMEDIS
ceatinclinata. Demonſtrandum eſt non manere ipſam; ſed
rectam reſtitui.
Itaque ſecta ipſa plano per axem, recto ad
planum, quod eſt in ſuperficie humidi, portionis ſectio ſit
a p o l rectanguli coni ſectio:
axis portionis, & ſectionis
diameter n o:
ſuperficiei autem humidi ſectio ſit i s. Si
igitur portio non eſt recta;
non utique erit a l ipſi i s æ-
quidiſtans.
quare n o cum i s non faciet angulos rectos.
ducatur crgo k ω contingens ſectionem coni in p [quæ
Suppleta
a. Federi-
co Cõm.
ipſi i s æquidiſtet:
& à puncto p ad i s ducatur p f æquidi
ſtans ipſi o n, quæ erit ſectionis i p o s diameter, &
axis por
Btionis in humido demerſæ.
ſumantur deinde centra graui
tatum:
ſitq; ſolidæ magnitudinis a p o l grauitatis centrũ
Cr;
ipſius uero i p o s centrum ſit b: & iuncta b r produca-
Dtur ad g, quod ſit centrum grauitatis reliquæ figuræ i s l a.
Quoniam igitur n o ipſius quidem r o ſeſquialtera eſt;
eius autẽ, quæ uſque ad axẽ minor, quam ſeſquialtera;
erit
Er o minor, quàm quæ uſque ad axem.
Quare angulus r p ω
Facutus erit:
cum enim linea, quæ uſque ad axem maior ſit
ipſa r o;
quæ à puncto r ad k ω perpendicularis ducitur,
uidelicet r t, cũ
Figure: /permanent/library/4E7V2WGH/figures/0032-01 not scanned
[Figure 19]
linea f p extra
ſectionem con
ueniet:
& pro-
pterea inter p
&
ω puncta ca-
datneceſſe eſt.
Itaq; ſi per b g
ducantur lineæ
ipſi r t æquidi-
ſtantes;
angu-
los rectos cum
ſuperficie humidi continebunt:
& quod in humido eſt ſur-
Gſum feretur ſecundum perpendicularem, quæ per b ducta
eſt, ipſi r t æquidiſtans:
quod uero eſt extra humi dum ſe-

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