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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163436VERA CIRCULI jor eſt quam E, & ideo A B ſeu C C major eſt quam A E,
&
igitur AE + CC minor eſt quam 2 CC: atque AC + E C
eſt ad 2 CC ut A + E ad 2 C, ſed A + E minor eſt quam
2 C;
& ideo A C + E C minor eſt quam 2 CC; proinde
A C + E C + A E + CC minor eſt quam 4 CC;
& igitur
C - A minor eſt quadruplo ipſius E - C, quod demon-
ſtrare oportuit.
PROP. XVI. THEOREMA.
SInt duo Polygona complicata A, B;
11
A # B
C # D
E # F
nempe A extra hyperbolæ ſecto-
rem &
B intra: Continuetur ſeries con-
vergens horum polygonorum complica-
torum ſecundum noſtram methodum
ſubduplam deſcriptorum, ita ut polygona extra hyperbolem
ſint A, C, E, &
c. & intra hyperbolem B, D, F & c; Dico A
+ E majorem eſſe quam 2 C.
ex prædictis manifeſtæ ſunt ſe-
quentes duæ Analogiæ, prima quoniam A, C, B, ſunt con-
tinue proportionales;
& ſecunda, quoniam C, D, B, ſunt
harmonicè proportionales;
&
22
A - C:C - B::A:C
C - B:C - D::A + C:A
proinde exceſſus A ſupra C,
hoc eſt A - C, eſt ad ex ceſſum
C ſupra D ſeu C - D;
In ratione
compoſita ex proportione A ad C &
ex proportione A + C
ad A hoc eſt in ratione A + C ad C, at A + C eſt ma-
jor quam C &
ideo exceſſus A ſupra C eſt major exceſſu C
ſupra D, eſt autem E major quam D;
& proinde exceſſus A
ſupra C multo major eſt exceſſu C ſupra E;
manifeſtum eſt
igitur A + E majorem eſſe quam 2 C, quod demonſtrare
oportuit.

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