Many fascinating questions are covered, including:
- Why just kinetic and potential energies - is one more fundamental than the other?
- What are heat, temperature and action?
- What is the Hamiltonian?
- What have engines to do with physics?
- Why did the steam-engine evolve only in England?
- Why S=klogW works and why temperature is IT.
Using only a minimum of mathematics, this book explains the emergence of the modern concept of energy, in all its forms: Hamilton's mechanics and how it shaped twentieth-century physics, and the meaning of kinetic energy, potential energy, temperature, action, and entropy. It is as much an explanation of fundamental physics as a history of the fascinating discoveries that lie behind our knowledge today.