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# Title: [Lectiones XVIII, Cantabrigiae in Scholis publicis habitae] Lectiones XVIII, Cantabrigiæ in Scholis publicis habitæ (shelfmarks Leibn. Marg. 0; ZEN Leibn. Marg. 0)
# Folio 51, page id 797435492:0087
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# Lines: 41 recognised, mean confidence 0.91
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E
test
L. R C T
villae lacitudinem, ipsum spatium R Z non ita magnum esse, quin inCtaF
Puncti portircenleri. Ouibus expenlis luculente constare videtur pro-
Dolicum.
XVIII. Subdo tantum, Si oculus usquam intra spacium Z. B Rtatua-
tur, vitionem inde contulam, aut nullam eradere; quia nempe rune
refexi pexcipui (seu rectistimi) oculum convergentes appellent.
XIX. FX his porro facile refelluntur, quae de imaginis loco pleni-
que cradunt omnes Optici; cum illis novistimus Flonor. Fabri; juxra
quorum doctrinam imago a puncto reflectionis canto distat interrallo,
quanto punctum radians ab eodem lemoretur; ita quidem ut Sol ex hu-
julmodi refectione conspicuus ad cantam, quantam directé spectatus, di-
stanciam eorum inlistendo sententix) debear apparere. Quod im-
mane quancum experientix retragatur. erenim (i Soli exponatur Spe-
culum LE BC (COnCarum, aut ConvexuM) sic ut ei Sol. quali perpen-
dicularirer immineat, oculusque prove axem BC constituatur uspi-
am; tere circa punctum Z, arbitrance sensu, luculenta Solis imavo
sele praebebit oculo conspiciendam; id quod juxta ratiocinium no-
strum necessario debuit erenire. verum hic error (in Oprica capitalis,
e quo non ablegato nulla phaenomeni cujuscunque ratio rerisimilis
constabie. ubique se objiciet refutandum. hic itaque pluribus parco;
persoque vertus oculum extra radiarionis axem positum; postquam
unicami hanc praxecedentibus adnexam obnerrationem subjecero.
XX. Majoris Sphaerx porrio rehementius uric; ut ec Objectum
vilibile clarius acque distinctius repraesentat, quam minoris aequalem
obtinens laticudinem porrio.
Super eandem nempe subrensam N V insistant imparium circulo-
rum seomenta NBV, Nbr; quorum axis AD; _ in hoc circulo-
rum centra C, C; Constat ut minoris peripheriam NI. bV exrra majoris
AIBV jacere; ita majoris centrum C intra minoris centrum c ex. Fiy. 69.
iltere. bisecencur jam Semidiamerri CB, cbinZ, 2; ducanturque
tangentes BT, BF; hisque ductxe C NV; CH occurrant punctisE, c:
denuo radiie N axi paralleli sic ad Peripheriam AB V refexus liR.
ad ipsam vero +(bv sic ejuldem reflexus NK; liquidissime jam patet
quod sit NCE HL; hoc est quod dupla 2 Hmajor sit dupl à LR;
adecqu Pla 2 HMasor Cimpla Z R. majoris itaque Sphaera POr
tio lusccores la cerminos illabentem lucem cosit; adeoque po-
elutus operatur; eademque de causa rem objectam illuctrius arque
distinctius