A system of natural philosophy, designed for the use of schools and academies (1845)
Moffat, J[ohn] M. [from old catalog] · Philadelphia, E. C. Biddle · leaf 359
S\ … 356 optics. falling directly on the mirror, as E C, be reflected so as to forman image at D, but so likewise will any incident ray whatever,as E M, which will be reflected in the direction M N, so that theangle BMN will be equal to the angle C M E ;* and when theeye is at N, receiving the reflected…
Physics
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Vnderweysung der Messung : mit dem Zirkel vn[d] Richtscheyt in Linien, Ebnen vnnd gantzen Corporen (1525)](https://img.insideoutlibrary.com/img/200/ia-vnderweysungderm00drer-71-157.webp)
