Huygens, Christiaan, Christiani Hugenii opera varia; Bd. 2: Opera geometrica. Opera astronomica. Varia de optica

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[141] Fig. 22.* 19. Maii.
[142] Fig. 23.* 20. Maii.
[143] Fig. 24.* c a * 27. Maii.
[144] Fig. 25.c * 31. Maii. a *
[145] Fig. 26.* 13. Iun.
[146] Fig. 27.* 16. Ian. 1656.
[147] Fig. 28.* 19. Febr.
[148] Fig. 29.* 16. Mart.
[149] Fig. 30.* 30. Mart.
[150] Fig. 31.* 18. Apr.
[151] Fig. 32.* 17. Iun.
[152] Fig. 33.* 19. Oct.
[153] Fig. 34.* 21. Oct.
[154] Fig. 35.* 9. Nov.
[155] Fig. 36.* 27. Nov.
[156] Fig. 37.* 16. Dec.
[157] Fig. 38.* 18. Ian. 1657.
[158] Fig. 39.* 29. Mart.
[159] Fig. 40.* 30. Mart.
[160] Fig. 41.* 18. Maii.
[161] Fig. 42.* 19. Maii.
[162] Fig. 43.* 17. Dec.
[163] Fig. 44.* 18. Dec.
[164] Fig. 45.* 27. Dec.
[165] Fig. 46.* 11. Mart 1658.
[166] Fig. 47.* 16. Mart.
[167] Fig. 48.* 23. Mart.
[168] Fig. 49.* 3. Apr.
[169] Fig. 50.* 10. Nov.
[170] Fig. 51.* 16. Ian. 1659.
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168441ET HYPERBOLÆ QUADRATURA.
SCHOLIUM.
NOn opus eſt ut hic demonſtrem majorem duarum me-
diarum arithmeticè continuè proportionalium inter duas
inæquales quantitates majorem eſſe quam major duarum me-
diarum Geometricè continuè proportionalium inter eaſdem,
&
igitur hujus propoſitionis approximationem præcedentis
eſſe exactiorem, quod etſi fiat;
præcedente tamen ob facilita-
tem potius utimur.
PROP. XXIII. THEOREMA.
Sint duo polygona complicata
11
A B # A
C D # C
E F # G
K L # H
Z # X
A, B, nempè A extra hyperbolæ
ſectorem, B intra.
continuetur ſe-
ries convergens horum polygono-
rum complicatorum ſecundum me-
thodum noſtram ſubduplam de-
ſcriptorum, ita ut polygona extra
hyperbolam ſint A, C, E, K, &
c, & intra hyperbolam B,
D, F, L, &
c; Sitque ſeriei convergentis terminatio ſeu hy-
perbolæ ſector Z.
dico Z majorem eſſe quam C dempto tri-
ente exceſſus A ſupra C.
ſit exceſſus C ſupra G quarta pars
exceſſus A ſupra C, &
exceſſus G ſupra H quarta pars ex-
ceſſus C ſupra G, continueturque hæc ſeries in infinitum ut
ejus terminatio ſit X.
exceſſus A ſupra C major eſt quadru-
plo exceſſus C ſupra E, &
ideo exceſſus C ſupra E minor
eſt exceſſus C ſupra G, eſt ergo E major quam G.
Deinde
exceſſus C ſupra E major eſt quadruplo exceſſus E ſupra K,
&
ideo exceſſus C ſupra G multò major eſt quadruplo ex-
ceſſu E ſupra K, &
igitur exceſſus G ſupra H major eſt
exceſſu E ſupra K;
cumque E major ſit quam G, ma-
nifeſtum eſt K etiam majorem eſſe quam H:
eodem pror-
ſus modo demonſtratur in omni ſerierum A, C, E, K;
A,
C, G, H, continuatione, terminum quemcumque ſeriei A,
C, E, majorem eſſe quam idem numero terminus ſeriei

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