This text provides a clear understanding of the fundamental principles of thermal and fluid sciences in a concise manner in a rigorous yet easy to follow language and presentation. Elucidation of the principles is further reinforced by examples and practice problems with detailed solutions. Firmly grounded in the fundamentals, the book maximizes readers’ capacity to take on new problems and challenges in the field of fluid and thermal sciences with confidence and conviction.  Standing also as a ready reference and review of the essential theories and their applications in fluid and thermal sciences, the book is applicable for undergraduate mechanical and chemical engineering students, students in engineering technology programs, as well as practicing engineers preparing for the engineering license exams (FE and PE) in USA and abroad.