The textbook of Solid State Physics has a pedagogical derivation of classic topics that immediately facilitates an examination of modern topics. While some mathematical techniques are present, this book focuses primarily on physics and a clear presentation of the basic concepts that underlie such current research problems. Solid State Physics has been the standard physics text for physics students. The goal of this book is that it should be easily accessible to undergraduates and other level of students. The emphasis in the book has always been on physics rather than formal mathematics. The language in this book is simple, flowless and catchy.