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# Title: [Astronomiae Physicae & Geometricae Elementa] Astronomiæ Physicæ & Geometricæ Elementa (shelfmark Leibn. Marg. 124)
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LESLLOHOMIE PHISILA
4.4.C
quantur cb, 2C2D ad tocum tendentes inter verticeut acnordam
intercepta, ipla chorda Tunt in subduplicata ratione rectarum SC,
52C; et superius est ostentum rectas cD, 2c2D eAe fere aqua lc5.
(Spatia nempe per qua Cometa cadendo rersus solem in divertis ab
illo distantiis eodem tempore percurreret,) et etiam vostigium Co-
meta in Oblerratione secunda proximum elle vertici arcus ACB, lC.
rectisii portionis Trajectoria à Cometa inter Obserrationem pri-
mam d tertiam deseripta. Sed ex punctum zc hoc modo inven-
tum non pro accurato Cometa restisio in plano Reliptica vendi.
tatur, Sed prosere vero ex ab accurato non nimis remoto.
Eitria puncta ere libeat ut Prop. praec. factum; Sed hoc modo
operando rix ultra secundam operationem necelse erit procedere:
Ht recta conjunsens bina puncta F _ 2F, ex altumpris c e 2C per
Draec. determinata, secabit re in puncto o (cui proxinqua admo-
dum lunt) accurato Cometa restisio in Obserratione tertia, recta-
que P2P similiter iplam r a secabit in puncto x ejusdem Comcta
reltisio in Obserratione prima, ut supra octensum cM oportere H-
eri cum c et 20 Tunt punctis veris proxima. Determinatum isitur
est punctum quod (in praxi ProP. PFXC.) Prima, secunda e tertia vice
commodissime altumitur pro vestisio Cometae in plano Fcliprica.
In punctis c e 2c modo praedicto praeterpropier determinandis.
non raro in Operationibus graphicis methodo tentatira proceden.
dum erit, ubi accuratior aut faltem plene Geometrica deficit; ne
que opus est Curras minus parabiles, quibus in constructione opus
Mhet, hic adhibere.
PROPOSTTIO AAVIII
quanuo Caa Leduos tenet, deternare.
Tisdem manentibus _ per eaIdem literas designatis atque in prae
cedentibus, recta OX, o E producantur donec concurrunt in s: jun-
Satur 5O, SX, 558. Prius data
crant omnia puncta S, Oe X.
adeoque trianguli S0X tam
latera quam anguli; e pr
inde angulus SX0 illorur
uni deinceps. POrrO, TL DCF E
ducatur E0 ad x0 parallela.
recta ou occurrens in o, erunt
triangula 00E e EXo aqui
ansula; adcoque cum Cx nO
tis lateribus oE (xquali OX) et
Ou (differentia notarum recta-
TU cOeE E X) una cum angu.
lo recto aoE innotescunt reliqua latera e anguli, innotelcent c an-
suli criansuli ExS: Sed datur in hoc triansulo larus unum XE:
Lib. V.
Fddem methodo determinabitur punctum 3C Cx 2C quO 2C CxC
Dositionem Lineae Koaa Laecora Coara, Tempusque
dabuauua
L
cabi
5bX
ASIt
Tire
nota
X15
moc
nota
exine
One
L1a)
cujus
ques
Tras
(Der
XI
men
aDDC
Teir
area
Tune
Duse
Coir
Ca
InV
tur
O5
inde
rect
angi
Tnel
Fcli
Pro
CiEC
nec