496T fm i-xxvi 01/10/06 22: 13 Page xi Preface·xi Materials of Importance One new feature that has been incorporated in this edition is"Materials of Im portance"pieces; in these we discuss familiar and interesting materials/applications of materials. These pieces lend some relevance to topical coverage, are found in most chapters in the book, and include the following Carbonated Beverage Containers Water(Its Volume Expansion Upon Freezing) Tin(Its Allotropic Transformation) Catalysts(and Surface Defects Aluminum for Integrated Circuit Interconnects ·Lead- Free Solders Shape-Memory Alloys Metal Alloys Used for Euro Coins Piezoelectric Ceramics Shrink-Wrap polymer Films Phenolic billiard balls Nanocomposites in Tennis Balls Aluminum electrical wires Invar and Other Low-Expansion Alloys An Iron-Silicon Alloy That is Used in Transformer Cores Light-Emitting Diodes Concep t check Another new feature included in this seventh edition is what we call a"Concept Check, a question that tests whether or not a student understands the subject mat ter on a conceptual level Concept check questions are found within most chap- ters; many of them appeared in the end-of-chapter Questions and Problems sections of the previous edition. Answers to these questions are on the book's Web site, www.wiley.com/college/callister(studentCompanionSite) And, finally, for each chapter, both the Summary and the Questions and Prob- lems are organized by section; section titles precede their summaries and ques tions/problems Format Changes There are several other major changes from the format of the sixth edition. First of all, no CD-ROM is packaged with the in-print text; all electronic components are foundonthebooksWebsite(www.wiley.com/college/callister).thIsincludesthe last five chapters in the book--viz Chapter 19, " Thermal Properties: " Chapter 20, "Magnetic Properties; Chapter 21, Optical Properties; Chapter 22, " Materials Selection and Design Considerations; and Chapter 23, " Economic, Environmental and Societal Issues in Materials Science and Engineering. "These chapters are in Adobe Acrobat pdf format and may be downloaded Furthermore, only complete chapters appear on the Web site (rather than se lected sections for some chapters per the sixth edition). And, in addition, for all sec tions of the book there is only one version--for the two-version sections of the sixth edition. in most instances, the detailed ones have been retainedMaterials of Importance One new feature that has been incorporated in this edition is “Materials of Im￾portance” pieces; in these we discuss familiar and interesting materials/applications of materials. These pieces lend some relevance to topical coverage, are found in most chapters in the book, and include the following: • Carbonated Beverage Containers • Water (Its Volume Expansion Upon Freezing) • Tin (Its Allotropic Transformation) • Catalysts (and Surface Defects) • Aluminum for Integrated Circuit Interconnects • Lead-Free Solders • Shape-Memory Alloys • Metal Alloys Used for Euro Coins • Carbon Nanotubes • Piezoelectric Ceramics • Shrink-Wrap Polymer Films • Phenolic Billiard Balls • Nanocomposites in Tennis Balls • Aluminum Electrical Wires • Invar and Other Low-Expansion Alloys • An Iron-Silicon Alloy That is Used in Transformer Cores • Light-Emitting Diodes Concept Check Another new feature included in this seventh edition is what we call a “Concept Check,” a question that tests whether or not a student understands the subject mat￾ter on a conceptual level. Concept check questions are found within most chap￾ters; many of them appeared in the end-of-chapter Questions and Problems sections of the previous edition. Answers to these questions are on the book’s Web site, www.wiley.com/college/callister (Student Companion Site). And, finally, for each chapter, both the Summary and the Questions and Prob￾lems are organized by section; section titles precede their summaries and ques￾tions/problems. Format Changes There are several other major changes from the format of the sixth edition. First of all, no CD-ROM is packaged with the in-print text; all electronic components are found on the book’s Web site (www.wiley.com/college/callister). This includes the last five chapters in the book—viz. Chapter 19, “Thermal Properties;” Chapter 20, “Magnetic Properties;” Chapter 21, “Optical Properties;” Chapter 22, “Materials Selection and Design Considerations;” and Chapter 23, “Economic, Environmental, and Societal Issues in Materials Science and Engineering.” These chapters are in Adobe Acrobat® pdf format and may be downloaded. Furthermore, only complete chapters appear on the Web site (rather than se￾lected sections for some chapters per the sixth edition). And, in addition, for all sec￾tions of the book there is only one version—for the two-version sections of the sixth edition, in most instances, the detailed ones have been retained. Preface • xi 1496T_fm_i-xxvi 01/10/06 22:13 Page xi