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

Table of figures

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[Figure 81]
[Figure 82]
[83] TAB. XLIV.Fig. 2.D H A B E F G
[84] Fig. 1.E G N L O I Q P D K M H F A
[85] Fig. 3.B E F A D G C
[86] I. CasusFig. 4.Y Q R C A B M L I K V C O S X
[87] II. CasusFig. 5.R C Y Q A B I L M K V O X S C
[88] III. CasusFig. 6.Q C D Y K L I N M S V B X C A G O
[89] Fig. 7.IV. CasusQ D C A B S L N X M I V Y K C G O
[Figure 90]
[91] Pag. 506.TAB. XLV.Fig. 1.C F D B
[92] Fig. 2.C B A E F
[93] Fig. 3.B b F f H c
[94] Fig. 4.C D B A E F G H
[95] Fig. 5.C b d D B E F G f g e
[96] Fig. 6.B G A C D
[Figure 97]
[Figure 98]
[Figure 99]
[Figure 100]
[Figure 101]
[Figure 102]
[103] Pag. 520.TAB. XLVI.Fig. 1.D C E A X F K V O I L T α M N
[104] Fig. 3.Δ A Φ G F N E M I D H L B C K O P Q Σ R T V X Y Z S Γ Δ Θ @
[105] Fig. 5.C B A D E
[106] Fig. 4.H C L E B A D F K G
[107] Fig. 6.L G C F M A H B E I D K
[108] Fig. 2.G C H B A Y L X P K V Q I O S R F D E N
[Figure 109]
[Figure 110]
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166439ET HYPERBOLÆ QUADRATURA. ceſſus K ſupra E major exceſſus H ſupra G; cumque E ma-
jor ſit quam G, manifeſtum eſt K majorem eſſe quam H:
eodem prorſus modo demonſtratur in omni ſerierum A, C,
E;
A, C, G, continuatione, terminum quemcunque ſeriei
A, C, E, majorem eſſe quam idem numero terminus ſeriei
A, C, G;
& ideo terminatio ſeriei A, C, E, nempe Z ma-
jor erit terminatione ſeriei A, C, G, nempe X, at ex Archi-
medis quadratura parabloæ conſtat X æqualem eſſe ipſi C
una cum triente exceſſus C ſupra A, &
proinde Z eadem
major eſt, quod demonſtrare oportuit.
PROP. XXI. 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 continuè proportionalium
arithmeticè inter A &
B. inter A &
B ſit media Arithmetica G, &
inter
G &
B ſit media Arithmetica H; item
inter G &
H ſit media Arithmetica M, & inter M & H ſed me-
dia Arithmetica N;
continueturque hæc ſeries convergens A B,
G H, M N, O P, in infinitum, ut fiat ejus terminatio X.
ſatis
pater ex prædictis G majorem eſſe quam C, atque H media
Arithmetica inter G &
B major eſt media harmonica inter eas-
dem G, B;
media autem harmonica inter G & B major eſt quam
D media harmonica inter C &
B, quoniam G major eſt quam
C;
& ideo media Arithmetica inter G & B, hoc eſt H, major
eſt quam D media harmonica inter C &
B. eodem modo M
media arithmetica inter G &
H major eſt media geometrica
inter easdem G &
H: & quoniam G eſt major quam C, &
H quam D;
media geometrica inter G & H major eſt quam
E media geometrica inter C &
D; & proinde M major
eſt quam E.
deinde N media arithmetica inter M & H ma-
jor eſt media harmonica inter eaſdem, &
quoniam H major
eſt quam D &
M quam E, media harmonica inter M & H
major eſt quam F media harmonica inter E &
D; & ideo

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