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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 140

An illustration from Ioan. Baptistae Portae neap. De refractione optices parte, libri nouem, 1593, leaf 140
IO, BAPTISTAE portae … Efto /phcera cuius centrum K, & ab oculo D ad centrum pro¬ cedat linea D K , & ex pundo K oriatur reda B C, ad perpen¬ diculum circa D K, circulus defcribatur , diriganturq; tangen¬ tes D L,& D N, connedanturq; KL,K N, igitur anguli ad L,N, redi funt,quia ad femicirculum,ipfamque fphseram inibi…

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Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.

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