This e-book is a moment version of the person who was once released by means of John Wiley & Sons in 1988. It incorporates a brand new identify as the former one, A Primer of Diffusion difficulties, looked like consisting basically of a suite of difficulties in terms of diffusion. still, my goal used to be in actual fact spelled out and it continues to be a similar, specifically, to educate easy elements and strategies of answer for diffusion phenomena via actual examples. back, I emphasize that the insurance isn't encyclopedic. There already exist numerous awesome works of that nature, for instance, J. Philibert's Atom routine, Diffusion and Mass shipping in Solids. My emphasis is on modeling and method. This booklet should still hence represent a constant creation to diffusion phenomena, no matter what their foundation or additional software. This variation has been principally revised. It encompasses a thoroughly new bankruptcy and 3 new appendices. i've got further a number of new workouts stemming from my event in instructing this fabric during the last 15 years. i am hoping that they are going to be instructive to the reader for they weren't selected perfunctorily. even though they're the bane of authors and of readers, i've got retained footnotes in the event that they may also help the reader's comprehension. extra, yet nonessential fabric is accrued on the finish of chapters, and is indicated within the textual content via superscripts.