Huygens, Christiaan, Christiani Hugenii opera varia; Bd. 1: Opera mechanica

Table of figures

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[101] Fig. 5.D D D E F E B A C H K
[102] Pag. 160.Fig. 1.F D D @ N A L C H K M
[103] Fig. 2.D D D F B A L C H K
[104] Fig. 3.C A B
[105] Fig. 4.B A K C E D G
[106] G D E C A K B
[107] G D K C A B
[108] Fig. 5.K B K A C E D F
[109] Fig. 6.Q B Q O N A C E D R P F
[110] Pag. 164.Fig. 1.G B O N C R P F
[111] Fig. 2.G B R F
[112] Fig. 3.A E C F B
[113] Fig. 4.A C E D F B
[114] Fig. 6.A B C G D L
[115] Fig. 5.H A O M R L N
[116] Pag. 166.TAB.XXV.Fig. 1.A O C G D L N
[117] Fig. 2.A B C G D L N
[118] Fig. 3.O C D A K B N E F C D L M
[119] Fig. 4.O A C D F E K B N C L D M
[120] Fig. 5.E A G F H K B D C
[121] Pag. 170.TAB. XXVI.Fig. 1.Ω O Ω A Z R F R N E N R G S V P Φ Δ V B D K C
[122] Fig. 2.L O A V P Φ Δ V B E C S H D
[123] Fig. 3.F G E G P A P K K L B D B S
[Figure 124]
[Figure 125]
[126] Pag. 188.TAB.XXVII.Fig. 1.O V VA M N D N B O E CE A G B D C F
[127] Fig. 2.S Z G F H Y
[128] Fig. 3.D A D M T C
[129] Fig. 4.A E N D C
[130] Fig. 5.K D B G A F E H
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10768CHRISTIANI HUGENII nis intercepto, & in eandem partem cavo. Ergo & F D
11De de-
SCENSU
GRAVIUM.
eodem arcu B D major erit:
quare conſtat propoſitum.
PROPOSITIO XIII.
IIsdem poſitis, ſi recta A B occurrat ipſi D G in-
22TAB. VI.
Fig. 6.
tra circulum;
Dico arcum B D, rectis G D,
A B interceptum, majorem eſſe recta D F.
Jungatur enim D C & ducatur arcui D B ſubtenſa D B.
Quoniam ergo angulus A B D æqualis A C D, hoc eſt,
angulo A D G;
angulus autem D F B major angulo A D F,
ſive A D G;
erit idem D F B etiam major D B F. Ergo
in triangulo D F B latus D B majus latere D F;
unde mul-
to magis arcus D B ſuperabit eandem D F.
Quare conſtat
propoſitum.
PROPOSITIO XIV.
SIt cyclois A B C cujus baſis A C axis B D.
Quomodo autem generetur ex definitione &
deſcriptione mechanica ſuperius traditis ſatis ma-
nifeſtum arbitror.
Et circa axem B D, circulus
deſcriptus ſit B G D, &
à quolibet puncto E in cy-
cloide ſumpto agatur E F baſi A C parallela, quæ
occurrat axi B D in F, ſecetque circumferentiam
B G D in G, Dico rectam G E arcui G B æqua-
lem eſſe.
Deſcribatur enim per E punctum circulus L E K ipſi
B G D æqualis, quique tangat baſin cycloidis in K, &
du-
catur diameter K L.
Eſt igitur recta A K arcui E K æqua-
lis;
ſed tota A D æqualis ſemicircumferentiæ K E L; ergo
K D æqualis arcui E L ſive G B.
Eſt autem K D ſive N F
æqualis E G, quoniam E N æqualis G F, &
communis
utrique N G.
Ergo conſtat & G E æqualem eſſe arcui G B.

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