Item fcitur ratio quare ab uno pun&o fpeeuli nihitomintis poflfit majus tp%*tium in oppofito pariete reflexe illuminari, nam ut in fig. 2. vidcs radti divtrfiA D, B D, C D, a diverfis pun&is A,B> C luminofi refleftunmr ab unopun&o D in diverfa pun£ta E, F, G, ita ut radius incidens A… … Sic etiam omnia luminofipun&apoflimt radiarein unum pun&um,illudqueintenfius illuminare, uti patet in prima figura4 fupra fi luminofum foret EFG»radiaret reflexc pun&a diverfa E, F, G, omnia in unum pun&um A. ROPOSITIQ X. Lumen refiexum femper eU minm iliuflre, eodem non reflexo…
Optics, Geometrical · Optical instruments
Internet Archive · Getty Research Institute · Public Domain Mark 1.0. Free to use for anything.