Finn's Thermal Physics

Citation

Rex, A., & Finn, C. B. P. (2024). Finn's Thermal Physics (4th ed.). CRC Press.

Chapter Summary

The book has thirteen chapters and four appendices (physical constants and conversion factors, mathematical relations used in thermodynamics, the work needed to magnetize a material or polarize a dielectric, and answers to selected problems). The publisher describes this edition as a revision of C. B. P. Finn's original text by Andrew Rex that keeps the original style while adding statistical mechanics, worked examples after each new concept, more problems, and updates on superconductivity, magnetism, Bose–Einstein condensation, climate change and the physics of information. The chapter titles below come from the publisher's table of contents; no chapter text is paraphrased beyond what those titles and the publisher's description support.

Chapters 1–2: Temperature; Reversible Processes and Work

The book starts from the definition of temperature and then turns to reversible processes and the work done in them, the groundwork for the laws that follow. The publisher says the book proceeds from first principles.

Chapters 3–5: The First Law of Thermodynamics; The Second Law of Thermodynamics; Entropy

These three chapters form the classical core: energy conservation applied to heat and work, the second law, and entropy. The publisher notes that the text addresses the subtleties of the meaning of thermodynamic functions.

Chapter 6: Statistical Mechanics

The publisher says statistical mechanics is covered in two brand-new chapters; by title and position these appear to be Chapters 6 and 13. Its position straight after entropy suggests that the microscopic view is introduced once the classical quantities are in place.

Chapters 7–8: The Thermodynamic Potentials and the Maxwell Relations; General Thermodynamic Relations

The potentials and the Maxwell relations come before a chapter of general relations among thermodynamic quantities.

Chapter 9: Magnetic Systems

Thermodynamics is applied to magnetic materials. Appendix C, on the work needed to magnetize a material and polarize a dielectric, supports this chapter.

Chapters 10–12: Phase Changes; Open Systems and Chemical Potential; The Third Law of Thermodynamics

These chapters treat transitions between phases, systems that exchange matter and the chemical potential, and the third law.

Chapter 13: Quantum Statistics

The final chapter closes the book with quantum statistics. The publisher lists Bose–Einstein condensation among the updated topics.

Key Concepts

Chapters 1–5: Classical thermodynamics

• Temperature and reversibility: the opening subjects of Chapters 1 and 2.
• The first and second laws: Chapters 3 and 4.
• Entropy: Chapter 5.

Chapters 6–13: Statistical and applied thermodynamics

• Thermodynamic potentials and Maxwell relations: Chapter 7.
• Chemical potential and open systems: Chapter 11.
• Third law: Chapter 12.
• Quantum statistics: Chapter 13.

Critical Analysis

Strengths

• A focused sequence. The thirteen chapters move from temperature through the three laws and thermodynamic relations to phase changes and quantum statistics, so the book can be read straight through as a single argument.
• Worked examples as a design feature. The publisher states that worked examples follow each new concept, to show what the results mean numerically, and that the number of problems has increased. Answers to selected problems are printed in Appendix D.
• Magnetic systems and phase changes get their own chapters. Chapters 9 and 10 give these applications dedicated space rather than leaving them to exercises.
• Updated scope. The new edition adds statistical mechanics and topics such as superconductivity, Bose–Einstein condensation and climate change, which brings an older text closer to the content of a modern thermal physics course.

Limitations

• Statistical mechanics is concentrated. Only two chapters (6 and 13) are devoted to it, so a course that wants a statistical treatment from the start will want a second book.
• Little independent evidence. No published review of the fourth edition was found, and the publisher's text is inconsistent (it still refers to the "third edition"), so the claims above rest on the table of contents and sales description.
• Narrow range. The title list has no chapters on kinetic theory or on applications to other fields, which other thermal physics texts include.

Where It Fits in the Course

Finn's Thermal Physics is a compact, thermodynamics-first text that builds from first principles. Blundell and Blundell's Concepts in Thermal Physics takes a broader route, covering thermodynamics, kinetic theory and statistical mechanics in many short chapters and applying them to stars and condensed matter. Schroeder's An Introduction to Thermal Physics defines temperature and entropy through the counting of microstates and uses an informal style, so it is the better choice for readers who want statistical mechanics first.

Lemons's A Student's Guide to Entropy is a short companion on a single concept and pairs well with Chapters 4–5. Baierlein's Thermal Physics is another full thermal physics text, and Pathria and Beale's Statistical Mechanics is a graduate textbook, so it follows a book like Finn's rather than replacing it.

How to Use This Book

The page metadata lists first-year calculus, including partial derivatives, and an introductory physics course as prerequisites. The publisher presents the book as an introduction for readers who want an intuitive understanding of thermodynamics from first principles.

A practical plan:

• Core: Chapters 1–5 in order, then Chapters 7 and 8 for the potentials and relations that most later work uses.
• Applications: Chapters 9–11 according to the course, choosing magnetic systems or phase changes first if either is the focus.
• Statistical view: Chapters 6 and 13, read together at the end if the course is mainly thermodynamic, or earlier if statistical mechanics is the goal.
• Practice: Work the worked examples before attempting the problems, and use Appendix D to check answers to selected problems; Appendix B collects the mathematical relations used in the text.