i u Proprietate Lucis. 4f t I … tur, idque tanto magis, quanto obliquius immergatur. Non vero fatis adtendunt ad refractionum naturam, qui pundumB per lineam redam in E dicunt refringi, acfic per aliam redam ad viliim pervenire : res enim refrada I i, femper adparet perpendicularis rei refringenti, ac unum \ t ' L quodque pundum…
Light · Imprint 1662
Internet Archive · John Carter Brown Library · 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)
