Now in paperback, this book provides an overview of the physics of condensed matter systems. Assuming a familiarity with the basics of quantum mechanics and statistical mechanics, the book establishes a general framework for describing condensed phases of matter, based on symmetries and conservation laws. It explores the role of spatial dimensionality and microscopic interactions in determining the nature of phase transitions, as well as discussing the structure and properties of materials with different symmetries. Particular attention is given to critical phenomena and renormalization group methods. The properties of liquids, liquid crystals, quasicrystals, crystalline solids, magnetically ordered systems and amorphous solids are investigated in terms of their symmetry, generalised rigidity, hydrodynamics and topological defect structure. In addition to serving as a course text, this book is an essential reference for students and researchers in physics, applied physics, chemistry, materials science and engineering, who are interested in modern condensed matter physics.

An expose of Bill Gothard's teachings that affected countless Christian families since the 1960s.

The Syriac treatise published in the present volume is in many respects a unique text. Though it has been preserved anonymously, there remains little doubt that it belongs to Porphyry of Tyre. Accordingly, it enlarges our knowledge of the views of the most famous disciple of Plotinus. The text is an important witness to Platonist discussions on First Principles and on Plato’s concept of Prime Matter in the Timaeus. It contains extensive quotations from Atticus, Severus, and Boethus. This text thus provides us with new textual witnesses to these philosophers, whose legacy remains very poorly attested and little known. Additionally, the treatise is a rare example of a Platonist work preserved in the Syriac language. The Syriac reception of Plato and Platonic teachings has left rather sparse textual traces, and the question of what precisely Syriac Christians knew about Plato and his philosophy remains a debated issue. The treatise provides evidence for the close acquaintance of Syriac scholars with Platonic cosmology and with philosophical commentaries on Plato’s Timaeus.

The field of humic matter research has undergone drastic changes in concepts and principles since the first edition of Humic Matter in Soil and the Environment: Principles and Controversies was published more than a decade ago. Still the only book of its kind specifically addressing humic acid principles and controversies, the Second Edition presen

This powerful activity book will engage hands, hearts, and minds as it introduces children to the guiding principles of the Black Lives Matter movement. When the Black Lives Matter movement began in 2013, the three founders--Alicia Garza, Patrisse Khan-Cullors, and Opal Tometi--anchored its work in a list of guiding principles, developed through conversation with other activists. These principles commit the movement to empathy, loving engagement, and just action among its participants; affirm the importance of Black women, families, elders, and LGBTQ folk; and celebrate the strength and diversity of Black people in their communities and around the globe. Now young people can explore these powerful principles in What We Believe: A Black Lives Matter Principles Activity Book. Created by two teachers with more than thirty-five years of educational experience between them, the book presents the guiding principles in down-to-earth, child-friendly language, with each principle accompanied by writing prompts, space for children or adults to create their own reflections, and a coloring page. Supporting materials guide adults in sharing the principles with children and encourage kids to dream big and take action within their communities. An essential resource for anyone discussing racial equity with young people, What We Believe offers a beautiful and inspiring lens on the most important social justice movement of our time. Lee & Low Books will donate a portion of its proceeds from the book to the Black Lives Matter Global Network Foundation, Inc.

Professor Ziman's classic textbook on the theory of solids was first pulished in 1964. This paperback edition is a reprint of the second edition, which was substantially revised and enlarged in 1972. The value and popularity of this textbook is well attested by reviewers' opinions and by the existence of several foreign language editions, including German, Italian, Spanish, Japanese, Polish and Russian. The book gives a clear exposition of the elements of the physics of perfect crystalline solids. In discussing the principles, the author aims to give students an appreciation of the conditions which are necessary for the appearance of the various phenomena. A self-contained mathematical account is given of the simplest model that will demonstrate each principle. A grounding in quantum mechanics and knowledge of elementary facts about solids is assumed. This is therefore a textbook for advanced undergraduates and is also appropriate for graduate courses.

Change the Way You Think about Leadership At the age of thirty-three, Dr. Albert Mohler became the youngest president in the 164-year history of Southern Baptist Theological Seminary. He was the driving force behind the school's transformation into a thriving institution with an international reputation characterized by a passionate conviction for truth. In the process he became one of the most important and prominent Christian voices in contemporary culture. What will it take to transform your leadership? Effective leaders need more than administrative skills and vision. They need to be able to change the hearts and minds of those they lead. Leadership like this requires passionate beliefs that can stand up to pressure from without and within. In this updated edition Dr. Mohler has added a new introduction and conclusion based on an additional 10 years of leadership. He has also completely rewritten the chapter "The Digital Leader." The Conviction to Lead will crystallize your convictions while revolutionizing your thinking, your decision-making, your communication, and ultimately, those you lead. "Dr. Al Mohler has written a book that shakes us up and challenges our thinking. The Conviction to Lead is poised to become one of the all-time classic works on Christian leadership."--JIM DALY, President - Focus on the Family "Having rarely thought about leadership, I was hooked from the first chapter--to my complete surprise. This is a powerful book and gracefully written."--FRED BARNES, Executive Editor--The Weekly Standard