12.1. Introduction 12.2. Alpha-Particle Scattering and Rutherford's Nuclear Model of Atom 12.2.1. Alpha-Particle Trajectory 12.2.2. Electron Orbits 12.3. Atomic Spectra 12.3.1. Spectral Series 12.4. Bohr Model of the Hydrogen Atom 12.4.1. Energy Levels 12.5. The Line Spectra of the Hydrogen Atom 12.6. De Broglie's Explanation of Bohr's Second Postulate of Quantisation 12.6. De Broglie's Explanation of Bohr's Second Postulate of Quantisation
1. Electric Charges and Fields 2. Electrostatic Potential and Capacitance 3. Current Electricity 4.Moving Charges and Magnetism 5. Magnetism and Matter 6. Electromagnetic Induction 7. Alternating Current 8. Electromagnetic Waves 9. Ray Optics and Optical Instruments 10. Wave Optics 11. Dual Nature of Radiation and Matter 12. Atoms 13. Nuclei 14. Semiconductor Electronics: Materials, Devices and Simple Circuits 15. Communication Systems