Most people are familiar with energy, both in its everyday sense as a resource used for things like heating and powering electrical equipment, and – if they were paying attention in school – as a fundamental property of the physical world that can be converted from one form into another, but never created or destroyed. Entropy, the subject of this book, is a similar but much less well known fundamental physical property. As James Binney says in the first chapter, ‘most people without a ...