... determination of crystal structures after 19 12. As an indication of the central role that phase diagrams now play in the whole of materials science, the cumulative index for the whole of the 18-volume ... fallen on one of its sides, the new condition of stability. If, now, the tip is shaved off the pyramid, leaving a small flat 74 The Coming of Materials Science study of metallic structure. ... Deutsches Museum, Munich). 80 The Coming of Materials Science The prehistory of the phase rule, the steps taken by Gibbs and the crucial importance of the rule in understanding phase equilibria,...