ea b Elic fefquidiamecer five tripla ipfius b D, adeoque iEquahs line^ G L. IdemO e refradusab E in N fiipponiturvi fccund^ rcfradionis concurrere cumaxe in pundo M foco (cilicct principali cx fuppofitione. Quo cafu necef^fario angulus inclinationis erit eNC invicro, cui ^quahs QNEj re-fra6i:ionis… … \\y f .i. -.:i! II 46 T^undamentum II. CMathematico-Dioptricum. Nam in triangulo NC M ita eft finus anguliQJS[ M ad finum anguliN M C, ut C M adN C; & in triangulo d C K ita eft fmus anguli P d Kad fmum anguli d K C, ficut K C ad d C. Sunt autem N C & d C ^qua-les, cum…
Optics, Geometrical · Optical instruments
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