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

Table of figures

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[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.
[171] Fig. 52.12. Febr. *
[172] Fig. 53.* 24. Febr.
[173] Fig. 54.25. Febr. *
[174] Fig. 55.14. Mart. *
[175] Fig. 56.16. Mart. *
[176] Fig. 57.* 21. Mart.
[177] Fig. 58.* 22. Mart.
[178] Fig. 59.26. Mart. *
[179] Pag. 574.TAB. XLIX.Fig. 2.
[180] Fig. 1.C K O B H N G M S * F D A L E
[181] Fig. 3.E C D A * B
[182] Fig. 4.P Q O N M L * C R
[183] Fig. 5.C * V S X T Y
[184] Fig. 6.
[185] Fig. 7.
[186] Pag. 580.TAB. L.Fig. 2.R ♈ L D I T A N ♋ H G E P F K C Q O B M S
[187] Fig. 3.
[188] Fig. 4.N Q F C P L E A M H O D f
[189] Fig. 1.B A
[Figure 190]
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167440VERA CIRCULI eadem F major eſt. eadem modo utramque ſeriem in infini-
tum continuando, ſemper demonſtratur terminum quemlibet
ſeriei A B, C D, minorem eſſe quam idem numero terminus
ſeriei.
A B, G H; & igitur terminatio ſeriei A B, C D, nem-
pe Z minor erit terminatione ſeriei A B, G H, nempe X;
atque ex hujus 7, terminatio ſeriei A B, G H, ſeu X æqua-
lis eſt majori duarum mediarum arithmeticè continuè propor-
tionalium inter A &
B, & ideo Z eadem minor eſt, quod
demonſtrandum erat.
PROP. XXII. THEOREMA.
IIsdem poſitis quæ ſupra; dico Z
11
A B # A B
C D # G H
E F # M N
K L # O P
Z # X
ſeu ſectorem circuli vel ellipſeos
minorem eſſe quam major duarum
mediarum geometricè continuè pro-
portionalium inter A &
B. inter A
&
B ſit media geometrica G, & inter
G &
B ſit media geometrica H; Item
inter G &
H media Geometrica M, & inter M & H media Geo-
metrica N;
continuetúrque hæc ſeries convergens A B, G H,
M N, O P, &
c, in infinitum, ut fiat ejus terminatio X. ſatis
patet ex prædictis C &
G eſſe inter ſe æquales, item H majorem
eſſe quam D;
atque ob hanc rationem M media Geometrica in-
ter G &
H major eſt quam E media geometrica inter G & D.
deinde N media Geometrica inter M & H major eſt media har-
monica inter easdem;
& quoniam M major eſt quam E & H
major quam D, erit media harmonica inter M &
H major quam
F media harmonica inter E &
D; & ideo N media Geometrica
inter M &
H major erit quam F. eadem methodo utramque
ſeriem in infinitum continuando ſemper demonſtratur termi-
num quemlibet ſeriei A B, C D, minorem eſſe quam idem
numero terminus ſeriei A B, G H;
& igitur terminatio ſeriei
A B, C D, nempe Z minor erit terminatione ſeriei A B,
G H, nempè X;
atque ex hujus 9 terminatio ſeriei A B,
G H, ſeu X, æqualis eſt majori duarum mediarum Geometri-
cè continuè proportionalium inter A &
B; & ideo Z eadem
minor eſt, quod demonſtrare oportuit.

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