8vo. 4 photographic plates, numerous diagrams in text; half-title; 2pp. publisher’s advertisements. (Title-page creased lower corner with short marginal tear.) Publisher’s original blue cloth (rebacked preserving original spine, endpapers renewed, spine faded with faint library marking); quarter blue morocco folding case. 

 

FIRST EDITION of the Braggs’ exposition of their discoveries regarding the structure of the crystal. The father and son team were awarded the 1915 Nobel Prize in Physics “for their service in the analysis of crystal structure by means of X-Rays,” and they remain the only father-son Nobel Laureates. "Later developments have shown that these experiments of the Braggs have virtually given the science of crystallography a new basis" (PMM). Norman 319; PMM 406b.