: A popular piece of physics lore mentions that Lev Landau ranked physicists on a logarithmic scale (Newton at 0, Einstein at 1); Mermin reportedly placed himself at 4.5. 4. Legacy vs. Modernity
: Only after exhausting these models do they introduce crystal structures, motivating the reader to understand why a periodic potential is the only way to explain things like insulators or the Hall effect. 2. Core Scientific Contributions Ashcroft and Mermin
: It is notoriously difficult for undergraduates. It assumes a strong background in quantum mechanics and statistical mechanics, often requiring students to pick up concepts like the "quantum grand canonical ensemble" on the fly. : A popular piece of physics lore mentions