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# Title: Optica Promota, Seu Abdita radiorum reflexorum & refractorum Mysteria, Geometrice Enucleata (shelfmark Leibn. Marg. 94)
# Folio 90, page id 727094130:0102
# Original at the GWLB: https://digitale-sammlungen.gwlb.de/resolve?id=727094130&page=102
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3.8. BH )1S0
Cimul, nempe
aXIs ellipleos
ad LL-5 += Lo
ld CA.
ele
atocunt Oculo
De PL. distan
ciam Focorum:
igirur ellip.
(IS, FOciS FL.
delcripra, e
cransiens Per
punctum P, et
lipsis quaeliCa;
quod olten-
rop. 59. Probleia.
Fx unica lente, telescopium fabricare, cujus ope presbrti comprehen-
dant angulum visorium visibilis lonsinqui quancumlibet auctum
cum distincta vistone.
Tc angulus vitorius visibilis longinqui AFB, Ccg; relelcopium
exunica lence construendum, cujus opc presbrcus videac, visi-
bilis longinquiimaginem distinctam, curi angulo vilorio AO B:
sinc duoeriane ila ilolcelia A E B, AOB super eadem b1H AB;
ducacurqs. recta FOL. in balem A B perpendicularis, e eam bitari-
am secans in L. Deindeloco l, areospolitione L. L, describatue
elliplis densiraris illius diaphani dentioris, e quo Fabricanda elt
lens, et aeris, in quo exiltas oculus; ica uc recta BF producta, illius
circumterentiae su perpendiculoris in F; e in eadem ellipsi, A F.
produca crir perpendicularis circumterentiae in C; eodem quoq:
Focol, e eadem axeos politione L. F, delerio cur elliplus prioris
etiam densitaris, ita uc recta B Oproducta, illius circumterenria
sic perpendicularis inM, ex in eadem ellipei, A O producta, crie
erpendicularis circumteremix in H; et ex revolurioneharum et.
liplium