itaquc ex hypothefi uisequales habcat Convexitates , fi acu^tiori cOnvexitati addatur aha convexitas obtufior qusecunque , nonpotericfocum fiflereaddiametri extremitatem , nec ad centrum , undeneceffaridintra hasc tanquam terminos. Et quidem acutiori convexitati quanto ad->dita altera quxcunque… … mN Mi . -!■!■■
Optics, Geometrical · Optical instruments
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