This book presents accessible amplification of the original concepts, explanations, and discussion of thermodynamics of Willard Gibbs, father of thermodynamics and vector analysis. Laid out similar to translated foreign-language texts, the book offers modern visual figures and explanation alongside Dr. Gibbs' original scientific notation to explain the concepts and simplify difficult language. This valuable work also includes companion web-based, three-dimensional models and a summary of points at the end of each chapter. It makes the conceptual basis of thermodynamics accessible for all students in civil, mechanical, materials, and chemical engineering as well as physical science.