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 91
mam , & illa quoque concentrica, nifi tantum ea pars, qua? a lu¬ cida cornea? parte fe fubducit , vbi feneftratur. Cryftallinus e- tiam humor , & fi longe a centro abeft , eius tamen fuprema fu- perficies oculo eft concentrica, oportebat enim & concentri¬ cam effe, & prope vueam , ob id fumma Dei… … Efto vifiua pyramis quadrilatera CBAD, dirigens fe ad cetru oculi M. tranfit corneam G H, pupillam EF,& aqueum humore E F,fic vfq; ad cryftallinum I L,vnde tota pyramis irrefra<fta,& incolumis peruenit, & rem,vt eft,repra?fentat,non conturbatur vifio, feruatur in ea partium ordo , & concinnitas,…
Optics
Internet Archive · Getty Research Institute · 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 mechanicall powers [and] motions. Being one of the most easie, pleasant, usefull, (and yet most neglected) part of mathematicks. Not before treated of in this language (1648)](https://img.insideoutlibrary.com/img/200/ia-b30323915-319-0.webp)
