tdiametro^ radtm incidens axi parallelus poji fecundam refraciionemfaclamreftituitur parallelui: Slt Menifcus AB cujus convcxitas & concavftas ex ^quah femidiame-tro Cb vel aF, dico , quod radius DE axi CK incidens parallelusper fecundam refradionem in I fadam e vitro in acrem egrediatur… … « Demoit* SjfjtagmahCaput VIL 73 Demonfliatio. Radius D E vi prima re-fmdionis ab E dirigitur in c vel G nci^leda vi~tri craffitie percoroJl.pro 4Jiiijiis,cum Cc vclaG littripla radiiconvexiratis ACB ; igitur mipfb vitro erit angalus inclinationis LIE proiecunda refradioiie , vclei ^qualis FIG,…
Optics, Geometrical · Optical instruments
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