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

Table of figures

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[Figure 191]
[192] Pag. 626.TAB. LI.Fig. 1.F E D V S 30 20 10 C L G R H K P A M Z I O X B
[193] Fig. 2.L K O R E H N I S D G B C
[194] Fig. 3.A 16 15 14 13 12 11 10 9 B 8 7 6 5 4 3 2 1
[195] Fig. 4
[196] Fig. 5.
[197] Fig. 6.
[198] Fig. 1.
[199] Fig. 2.
[200] Fig. 3.
[201] Fig. 4.
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[203] Fig. 6.
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[205] Fig. 8.
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[208] Fig. 11.
[209] Fig. 12.
[210] Fig. 13.
[Figure 211]
[Figure 212]
[Figure 213]
[Figure 214]
[Figure 215]
[Figure 216]
[217] Pg. 700TAB. LIII.4 3 2 1 Annu Sat. lus
[218] 4 3 2 1 Jup.
[219] Luna Tellus
[220] Pag. 704.TAB. LIV.Fig. 1.Satu@@i. Jovis. Martis. Telluris. veneris. M@rc. ♎ Sol. ♈ VS
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191461ET HYPERBOLÆ QUADRATURA. ope ſolius regulæ & circini peracta, hanc in his non ſolum
eſſe impoſſibilem ſed etiam in omnibus problematis quæ ad
æquationem quadraticam reduci non poſſunt, ſicut facile
demonſtrari poſſet;
& ſi per geometricum intelligatur redu-
ctio problematis ad æquationem analyticam, omnia hæc
problemata ſunt geometrice impoſſibilia, cum ex hic demon-
ſtratis, manifeſtum ſit talem reductionem fieri non poſſe:
ſi verò per geometricum intelligatur methodus omnium poſ-
ſibilium ſimpliciſſima;
invenietur fortaſſe poſt maturam con-
ſiderationem omnia prædicta problemata eſſe geometriciſſi-
mè reſoluta, diligenter animadvertendum totam ſerierum
convergentium doctrinam poſſe etiam nullo negotio applicari
ſeriebus ſimplicibus.
Sit enim ſeries A, B, C, D, E, & c,
talis naturæ ut tertius terminus C eodem modo
11
A
B
C
D
E
Z
componatur ex primo &
ſecundo A, B, quo
quartus D componitur ex ſecundo &
tertio B, C,
&
quintus E ex tertio & quarto C, D, & ſic dein-
ceps in infinitum;
ſitque differentia anteceden-
tium A, B, major ſemper differentia immediatè
ſequentium B, C;
ſupponamus hanc ſeriem ita in infinitum
continuari donec duorum terminorum immediate ſe invicem
ſequentium nulla ſit differentia, ſitque unus ex illis terminis
z, quem ſeriei terminationem appellamus:
dico z eodem
modo componi ex A &
B quo ex B & C vel C & D; de-
monſtratio vix differt ab hujus 10 &
ejus conſectario: hac
ratione ſi ponatur triangulum, ſectori circulari vel elliptico
inſcriptum, vel ſectori hyperbolico circumſcriptum a, &

trapezium, ſectori circulari vel elliptico regulariter in-
ſcriptum vel hyperbolico regulariter circumſcriptum b;
erit hexagonum ſectori circulari vel elliptico regulari-
ter inſcriptum vel hyperbolico regulariter circumſcri-
ptum Vq {2 b3/a + b;
} & proinde ſector circuli, ellipſeos vel hyperbo-
læ eodem modo componitur ex a &
b quo ex b & Vq {2 b3/a + b; }
atque hinc etiam demonſtrari poteſt, quod ratio inter ſecto-
rem &
ejus triangulum datum non ſit analytica,

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