Elements of natural philosophy (Volume 2-3) (1850)
Bartlett, W. H. C. (William Holms Chambers), 1804-1893 · New York : Barnes · leaf 89
eached some sphericalsurface of which A! Br is the radius,by the time the portion of the inci-dent pulse at M\ will have passed on to A; and thesame of intermediate points of primitive disturbance onthe deviating surface between A and A\ the first and construction and ]ast points of incidence. The… … explanation. ELEMENTS OF ACOUSTICS. 81 • The angle JV7 A D, made bythe normal to the refractedpulse and that to the deviatingsurface, is called the angle ofrefraction. Denote the angleof incidence N A D, which isequal to the angle M A A,Fig. 38, by 9 ; and the angle ofrefraction N A D, which…
Mechanics · Acoustics · Optics
Internet Archive · Medical Heritage Library · Public Domain Mark 1.0. Free to use for anything.
![An illustration from L'optique divisée en trois livres : ou, l'On démontre d'une maniere aisée tout ce qui regarde 1. la propagation & les proprietez de la lumiere. 2. La vision. 3. La figure & la disposition des verres qui servent à la perfefectionner [sic] (1682)](https://img.insideoutlibrary.com/img/200/ia-loptiquedivise00ango-79-9.webp)
