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# Title: [Christiani Hugenii Zulichemii, Const. F. Horologium Oscillatorium. Sive De Motu Pendulorum Ad Horologia Aptato Demonstrationes Geometricae] Christiani Hvgenii Zvlichemii, Const. F. Horologivm Oscillatorivm. Sive De Motv Pendvlorvm Ad Horologia Aptato Demonstrationes Geometricæ (shelfmarks Leibn. Marg. 70; ZEN Leibn. Marg. 70)
# Folio 151, page id 799199311:0167
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tOHOLOO. OSCILLATOR.
certum oraritaris appensi plumbi, an vero ad cenerum olcilla= DR CBNFRC
cionis, quod, ab altero illo, lapc sensibili interrallo dictac, ac-
que comajore, qu ajortuerit sphaera auc lens plumbea. Ouic
enim, lipaca chameter quartam, auc cerriam partem, penduli
lonsicudinis xquer: Ouod lad centrum oscillarionis illam lonsi-
cudinem accipiendam dicamus, non tamen expediet quo pactoca,
quae decenero oscillationis oltenla lune, conreniant pendulo con-
tinue lonsitudinem suam immutanei, quale illud quod incer cy-
cloides moretur. Possec enim videri, etiam centrum ocillationis
murari, ad linsulas diverlas lonsicudines; quod tamen hoc modo
intelligendum non est. Res lane explicatu difficillima, si omnimo-
dam axpibdar lectemur. Nam in demonstrarione cemporum aqua-
lium in crcloide, mobile, per eam delatum, reluri punctum gravi-
tate praedicum considerarimus. Sed, Ciad effectum spectemus, non
magni facienda est difficultas haec; cum ponderis, quo pendulum
constat, magnicudo in horologiistanta non requiratur (et(I quo
majus ccelius) acduterentia cenrrorum graritaris, e oscillacio-
nis, alquid hic curvate possic. Ouod li camen eAtugere prortus
has utedd relimus, id Ila cnsequemur, si sphaeram lencemre pen-
duli, circa axem luus solzontalem, mobilem efficiamus: axis
exrrema urrinque, virga penduliima, inserendo: qua idcirco ut
bitida hac parre sicnecc CC. Fic enim hoc modo, ex motusna-
cura, ut eandem perpetuo tionem, respectu horizontalis plani,
Sphaera penduli server, aleue ita puncta ejus quaeris, xque ac
centrum iplum, crelor sem percurrant. Vnde celtathic jam
centrorum oscillationis Contderatio; nec minus pertectam tem
porum aequalicacem calc peuculum consequitur, quam si puncto
CTL L A
TEON15,
unico omnis ejus graritas continererur.
RO1051IIC
I L V
 mensura ntrsa, ed perpetua constituena ra
tione
busobnona ne cemporuo, alo ultale abd
auc corrumpipollu, res clt eucilillma, d a mulis priaets Guala.
Dua siprilcis temporibus reperta tuisser, non tam perplexae nunc
Forent, de pedis Romani, Craci, Hlcbraeique receris modulo, di
(ceprationes. Hlac vero mentura, Horologii nostri opera, Facile
conctiruitur; cum sine illo nequaquam, aur esre admodum, ha-
Certa, ac permanens magnitudinum mensura, quae nullis casi-