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# Title: [Physica, Id Est, Scientia Rerum Corporearum, In Decem Tractatus Distributa] Physica, Id Est, Scientia Rervm Corporearvm, In Decem Tractatvs Distribvta (shelfmarks Leibn. Marg. 7:1-2; ZEN Leibn. Marg. 7:1-2)
# Folio 193, page id 779785487:0251
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FI8. 3.
L LB. El. DE SON1S:
quoeumque tandem colloquentes spe-
ctent: Sic enim spcculum ellipei-
ig 37. CUM A F D L; SC ariS AD; FOcI B,
C; ex quibus ducaneur quorlibet
linex, v. 8, BF, BF, _C. icenqne
CI, CHI, &c. Cingulae ductae à B,
reRectentur in C; ex Sinoulae ductxe
aC rettecteneur ad B; hinc (i a1-
ter colloquentium sic in B, alcer in
C; licer B plurimum distee à C3
Submilta voce inter le colloqui
Pollune; Flinc ex hoc infinica rc-
Rexiones Segnuneur, ve paret; hinc
se aula iuxca hranc Formam Eabrica.
ca eltet, vix dici porest quamdiu
vox edica duraret; ve dictuim est
Supea; possene aurem tancum duo
Fructa peaedicta conoidos adhiberi
V. 8. GAHI, _ F D R; nON FaIT CH
inde tancus effectus consequerur;
aliqui Fhcacrum ellipricum delide-
sarene, ad invandam rocem acto-
rum, led profecto non video quan-
cum commodi inde reterri possic;
mallem ego esse parabolicum; v. 8.
18. 35. SC (cena ADC; haud dubie si reci-
cans sc in HI, verlus SpectaTOTCS F2-
dii reRectuneur.
PROD. CL ZZX.
Possunt ita contrahi radii soni in
parallelos; et ad instar linea, citra
impedimentum, in infinitum proyei
possint: Sic enim speculum ellipei-
18. 38. cum ABC, cuius FOcI (INED, F; 10-
quacur quispiam in D, ColligUnEUE
Omnes radii in F; IaIM VeFO E (IE
etiam focus tubi parabolici angu-
Aissimi TFIEC, in cuius canicarem
cadane duo radii AI, CFI, hand du-
bic retectuntur in parallelos HIE,
IL; vides lineam, quae per se in
intinicum projici potelt, quamm por-
so mulca ex his conlequaneui, ee
quam ad muleos rlus, ad Auporem
Fom. II.
vique, adhiberi possine, nemonon
videt.
DR OD. CLXAXI.
Potest fieri echo operâ speculi par
rabolici, cujus focus procul omnine
distet, si sonns et lumen diffunditur,
es reflectiur: Nempe qui est iux-
ea focum, primum audier vocem
directam, cum reAexam; porro ad
hoc ve hac Echo, debene eadii (e-
cundum priorem ordinem reRecti,
aliogni non Echo, Sed Bombus
habebicur, quod aurem radii se-
cundum cumdem ordinem reAe-
Etantur, a parabolico speculo, de-
monstrandum est; licec enim cer-
cum (IE, FeRecti paralleloS, restac
caimen ve ostendatur, primam vn-
dulam, v. 9. continuam reflectio
nec rilo modo dispergi; idem di-
co, de Secunda, terria, _c. (IE
enim Cpeculum ADC; Sic FOcUS FL, Ei8, 35i
vide vox procedic, accipianeur
aliquoc radii HIF, HIE, HID, HIE,
TIB; egnidem radius TIB, breuior
Cst HIC, X HIF; nempe hi duo sup-
ponuneur equales, luneque bie-
viores duobus HB, FIF, aqualibus,
igirur radius HID, vel COnuS PCt
radium FID, cirius aeringic specu-
lum, quam per radium HIC; e Per
HIC, cicius, quam per HIB; mO-
vetur enim Ceu diffunditur PonuS,
per omnes radios a quabili motu;
isitur Ponus incidens in speculum,
per radium HD, cirius refectieur,
quam incidens per radium FIC, vel
EIB; isitur vel inde concludo vn-
dulam aeris dispergi, id es, Con-
EIIUAI NON FeMaMeIC; nempe PaIS
aeris, qua per radium FID, incidir;
iam ceslexa, cendic versus FI, dum
alia, qua incidie per radium HC
persir adluc ire, verlus C; igiruE
inde