rcin perpendiculariadplanum c b, C B, fit ;e, progreffus illein denfiori medio, £f in rariori; in. al- teráautem fit progreffus lucis B E in denfiori, B E in rariori,vel mcn- furando perpendiculariter IE in denfioti medio , GF in rariori. Dico effe vt inclinata ac, ad inclinatam £e, vel / f; hoc… … Quoniam enim idem eft'medium in quo 4c,& inquo ÁC, zqu& velox cft motus ab 4 ad c motusab A.ad C. tempus ergo quo fit. motusad.z ade, cftad tempus quo. fit motus ab Á ad C, vt reda ac, adrecam A C. Similiter quoniam idem eft medium in quo £e, &- in quo BE, zqué vclox eft motus 35 ad e, & à B ad E,…
Mathematics, Greek · Conic sections · Physics -- Early works to 1800
Internet Archive · Fisher - University of Toronto · Public domain (published before 1931). Free to use for anything.
