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 107
E in longum extenfi in pun&o l,ibi videbitur M-Sed quia linex i centro terrx ducftat vfque ad aqua? fuperficiem ob nimiam diftantiam a mnndi cen¬ tro, quafi perpendiculares funt,non in I res videbitur fed produ fla ab M perpendiculari ad aquae fuperficiem A B , occurret F E in L, in L igitur… … • ;; - DO f bfiO ^ «O ;'K: V1 1 : i*:’ "i i?*-'7 gii ' • ?: m%r ' . Efto DF oculus , denfius fcilicet medium , nam aer tenuior eft aqueo humore in oculo conclufo . Centrum oculi C , res confpe&a B, veniat oblique ad;F,nQn in G decurrit, fed refran¬ gitur in E, extenditur G F in A, extendatur…
Optics
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
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