Pucillo, Gerald L.2013-02-012013-02-0119501950b14734667https://hdl.handle.net/2144/4954Thesis (M.A.)--Boston UniversityThis thesis is an attempt at an original investigation of the turbidity effect in emulsions. Two types of emulsions were used, tvpe 548 which is used mainly in spectroscopic and scientific work, and type Pan-X which is used mainly in commerical and amateur photography. They are both compsed of fine grains, 548 being finer than Pan-X,however. By partially shielding them with a knife edge, which was composed of stripping film, they were both exposed to a square root of two step wedge with the use of light of tungsten quality. They were then develoved using the same procedure of development for both.en-USBased on investigation of the BU Libraries' staff, this work is free of known copyright restrictionsThesis/Dissertation