• Drude Model of metals
• Sommerfeld Theory of metals
• Free Electron Model
• Crystal Lattices
• Reciprocal Lattice
• X-Ray Diffraction
• Bravais Lattices
• Electronic band structure
• Tight-Binding Method
• Semi-classical Theory of electron
• Fermi Surface
• Harmonic Crystal
• Phonon Dispersion
• Magnetism