Sphaera mundi, seu, Cosmographia demonstratiua, ac facili methodo tradita : in qua totius mundi fabrica, vna cum nouis, Tychonis, Kepleri, Galilaei, aliorumq́; astronomorum adinuentis continentur : accessere I. Breuis introductio ad geographiam. II. Apparatus ad mathematicarum studium. III. Echometria, idest geometrica tractatio de echo. IV. Nouum instrumentum ad horologia describenda : opus posthumum : correcta à multis mendis, quibus scatebat (1653)
nfpicua omnibus redduntur : aer,aut criftallus quia lumen tranfmittunt;etiamfi ab eo perípicua » non tamen confpicua redduntur. paries vel terra ; quia umen detinent , non ab eo folum illuminantur ;íed etiam ab co vifibilia efficiuntur. aer , & ther; quia lucem liberam praterlabi finunt, ideo… … ca lumini obijciantur; ea folum lumirrepriua- ri videmus , qua obici illi ; ac lumini in dire- &um fint fita. hanc linearum rectitudinem. ; nobis oftendunt in fequentibus figuris duae linee A E. & B F. qua vmbram luminota fphaeree A B. vndique terminant, pro quibus intelligere etiam poffumus duos…
Mathematical geography · Echo
Internet Archive · Fisher - University of Toronto · Public domain (published before 1931). Free to use for anything.
![An illustration from Mathematicall magick. Or, the wonders that may be performed by mechanicall geometry in two books, concerning mechanical powers [and] motions : being one of the most easie, pleasant, useful, (and yet most neglected) part of mathematicks ... (1680)](https://img.insideoutlibrary.com/img/200/ia-b30327751-311-0.webp)
