De radiis visvs et lvcis in vitris perspectivis et iride tractatus (1611)
De Dominis, Marco Antonio, 1560-1624 · Venetiis : Apud Thomam Baglionum · leaf 24
6 T rattatus In vitro igitur G H. perpendicularis A D. penetrat per centrum V. itrefracta : lipex vero A C. & A. D.non poffünt recta penetrare ad E..& | ad F. , fed frangunturin C. & D. ad perpendicularem verfüs B. & hanc tam magnam fractionem & fi negauimus paulo ante refractioni ordina- … riz,vbi medium denfius fuerit zequabile, & vniforme in craffitie; eam ta- men non negamus corpori fphoerico,rotundo, fiue conuexo, & difformi : curuitas enim illa plurimum iuuat fractiones ; & quod natura vitri non poteft; poteft tamen figura. In Vitro autem L. M. perpendicularis fimili- ter I T.…
Optics -- Early works to 1800
Internet Archive · Fisher - University of Toronto · Public domain (published before 1931). Free to use for anything.
![An illustration from Sphaera mundi, seu, Cosmographia : demonstratiua, ac facili methodo tradita : in qua totius mundi fabrica, vna ̀cum novis, Tychonis, Kepleri, Galilaei, aliorumq[ue] astronomorum adinuentis continetur : accessere, I. Breuis introductio ad geographiam, II. Apparatus ad mathematicarum studium, III. Echometria, idest geometrica traditio de echo (1620)](https://img.insideoutlibrary.com/img/200/ia-sphaeramundiseuc00bian_0-516-0.webp)
