Introduction - particles in atoms // Principles of electrostatics // Condensers, electrostatic instruments // Current electricity // Electrical power .EMP , Heating effects of current // Measurement of resistance, potential difference, current // Electrolysis, cells // Principles of magnetism // Magnetometry, Terrestrial magnetism, Magnetic effect of a current // Electrodynamics // Electromagnetic Induction // Properties of Magnetic materials // Thermo electricity // Units and their establishment, dimensions of quantities // Conduction of electricity through gases, ions, and electrons // Alternating current theory // Basic principles of valves // The triode as amplifier ,oscillator and detector cathode ray tube semiconductors transistors // Elements of radio activity and atomic structure // electrons round the nucleus, energy levels // X rays and their significance in atomic structure // Principles of photo electricity // Answers to Exercises // Index //