I am very much looking forward to the first graduate student who researches the history of gelatin with the characteristics of the myriad of brand names available at one time. Until then, for my purposes and interests in photographic emulsions as an historical process, I'm not finding the 'gelatin issue' a stumbling block.
Originally Posted by Photo Engineer
I would hope that Burt Carroll would write a different book today! That's the nature of science. If you wrote a revised edition, I would hope that someone would revise it 80 years from now . And each edition would be a valuable addition to the library of an historian of emulsion making. I have three editions of Fundamentals of Photographic Theory by James and Higgins. All of them have valuable information. The same is true for the four editions of The Theory of the Photographic Process, first by Mees, then by Mees and James, and finally by just James.
'And, many emulsion makers today say that adding Iodide like this should cause renucleation, but it actually does not if the process is carried out properly.'
That sounds like it's a book all of its own. Actually, that's the kind of opaque statement that's a pretty strong motivation to dig into the literature.
I'll add a short note for the non-chemists who would like to join this 'book club'. Halides (at least the ones we care about) are chloride (Cl), bromide (Br), and iodide (I). They combine with potassium (K), sodium (Na) and NH4 (ammonium ion). The combinations are 'salts'. NaCl, sodium chloride, is common table salt. The halides combine with the silver in silver nitrate (AgNO3) to form silver halides, sometimes noted as AgX. The silver halide is the photosensitive constituent of the emulsion.
Last edited by dwross; 12-09-2010 at 10:26 PM. Click to view previous post history.