the lecture is about the x-ray film and the construction of the film composition of the emulsion ,and the formation of latent image

 Each new edition of this lectures provides the opportunity to include 

recent progress in our rapidly changing field of diagnostic imaging 

Every lecture has been revised in light of new knowledge, technology, 

and techniques. It is the continuing goal of our lectures to present 

the underlying science of diagnostic imaging, including the core principles of image production and interpretation for the dental student