Ioan. Baptistae Portae neap. De refractione optices parte, libri nouem (1593)
Porta, Giambattista della, approximately 1535-1615 · Neapoli : Ex officina Horatij Saluiani : Apud Io. Iacobum Carlinum, & Antonium Pacem · leaf 109
ionem fieri veluti per infundibulum, Trop. IX, ET fi vulgo dici foleat vifionem per pvramidem fieri, non ta me n per integram , fedeurtam,&:' detruncatam, vel ad mo¬ dum infundibuli : nam radiofa pyramis fola, qux perpendi cula¬ ris ad cryftallinum producitur , fi cryftallinus nonobijceretur/… … Sit vifibileobiedum A BC D, oculi pupilla FG> cryftallinus HI , occurrit reda pyramis B C L M,qux fi vfque ad k defcende- ret, proculdubio perfeda pyrami s effet , fed cryftallini occur- fu fcinditurab ipfius fupetficie HI. Efto & refrada pyramis A E, veniat E ad oculum G , refrangitur in M , fic A…
Optics
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
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