ficut cxcefliis K G fupra dimidiam G C, ad dimidiam G C: &: com- p^onendo erit K L ad O L ut exceffus linea^ K G fupra dimidiam G C: ho.c efl K G ad F C: &: confequenter erit ut KL ad duplam O L, nem* pe ad O M, itaJfC G ad G C: & iterum componendo erit KL ad OM feii L N, hoc efl tota I… … .•ji ■ yv:.v ■ttn \f?0*>f . rrbh Syntagma hC^put JX. p| rum FC&OLad FG radium concavitatliobverfe ad parallelos, uc O M diamecer alte-rius concavicatis ad G C diftantiam foci virtu^*lis, quod erat demonflrandum* / Corotlarium L ^ Exhic demonftratis confirmatur propofitlo /^ 2^ fiipra , qua…
Optics, Geometrical · Optical instruments
Internet Archive · Getty Research Institute · Public Domain Mark 1.0. Free to use for anything.
![An illustration from L'optique divisée en trois livres : ou, l'On démontre d'une maniere aisée tout ce qui regarde 1. la propagation & les proprietez de la lumiere. 2. La vision. 3. La figure & la disposition des verres qui servent à la perfefectionner [sic] (1682)](https://img.insideoutlibrary.com/img/200/ia-loptiquedivise00ango-182-20.webp)
