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# Title: [Philosophiae Naturalis Principia Mathematica] Philosophiæ Naturalis Principia Mathematica (shelfmark Leibn. Marg. 166)
# Folio 210, page id 1041163592:0244
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210
PTIILOSOPHITA NALDRALIS
Dt Moro ec dirisim uE DL. - FB (CuPII - FD -FB ad F D Ceu FG-ZD
CORPORDM SE COmpOSTC UE PTY = FB ad FG, id cst (ob aequales L 1L
SE CC3 _S _ CF.)
CF. + BC = F R 2d
CF. = FS. Verum (0b
proporcionales BC ad
CF _E MI = W 2d N)
est etiam CF. = BC 2d
CF ut M ad N: adeoque
divisim FR ad FS ut
MadEY, dEPFODFETCA PEK
CorOl. 2. PrOP. Z
SuperHcies F FCOSIECOF.
pus, in iplam secundum lincam D F’incidens, persere in linea l’R
2d locum B. d. F. D.
Scholium.
fadem methodo pergere liceret ad superticies tres vel plures.
Ad usus autem Opricos maxime accommodatae lune Agurae Sph2-
rica. Si Perspicillorum riera Objectira ex vieris duobus Spheeri-
ce figuratis ec Aquam inter se claudentibus consentur; heri pocest
uc a retractionibus Aquae errores retractionum, quae hunc in ritro-
rum superticiebus extremis, latis accurare corrisaneur. Talia au-
tem ritra Objectira rieris Ellipricis _ Ilyperbolicis praeterenda
sune, non solum quod Facilius ec accuratius Formari possine, sed
etiam quod Penicillos radiorum extra axem vitri sitos accurarius
retringant. Verum tamen diverla diverlorum radiorum Retrangi-
bilitas impedimento est, quo minus Optica per Figuras vel Sphae-
ricas vel alias quascunque pertici pomt. Nis corrisi possine er
rores illine oriundi, labor omnis in exreris corrigendis imperite
vollocabitur.
DF