Abstract
AbstractIn agreement with earlier results (ref, 11, 12), the developability of mall silver speck~ in a ferrou -ferric chemical developer has now also been found to be determined by the Gibbs-Thom on equation, Based on rather general thermodynamic consideralions, it is now shown thai the developability of a silver speck containing a few ,ilver atoms change, abruptly on the addition or subtraction of a single atom only, A neutral latent image silver speck, if Inrger than a critical size, when placed in contact with the de eloper, starts to extrael electrom from it, causing the further growth of the nudeu. Due 10 the change of Ihe surface 10 volume ralio of the growing speck a small induction period should actually occur, but calculation, show Ihal this is 100 small to be of any practical importance. evertheless, the rate of developmcnt may in rease ubstantially with time due to the in rease of Ihe surface of the growing speck, the hange from pherieal to filamentary growth, and/or the proliferation of additi...
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