Mees, C. E. Kenneth (Charles Edward Kenneth), 1882-1960, Eastman Kodak Company · Rochester, N.Y. : Eastman Kodak Company · leaf 103
HALATION by the glass which is a Front Surface of medium of different density, and when it Back Surface of Glass leaves the glass again it is bent back so as to travel along a path parallel to that along which it entered the Fig. 96. glass, but if a ray leav- Rays in a Block of Glass. ing the glass… … passes into the glass of Fig. 97. Rays in Photographic Plate. the plate, and the rays which are near the cen- ter pass out into the air from the glass and we get a dark ring, but when suddenly the angle of the rays to the surface of the glass gets too big to get out they are reflected back and…
Photography
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
