A selection of the following topics will be covered. General wave physics (diffraction and resolution limits; refractive index and wave velocity; ray tracing; dispersion and Fourier composition; wave energy transport). Wave propagation (sound in air; sound in water; light and other electromagnetic waves in the atmosphere; mirages; sonar and radar shadow zones; optical fibre imaging; radar, including time-of-flight ranging; pulse-Doppler systems; radio-acoustic sounding systems (RASS)). Electromagnetic radiation (dipoles; polarisation; dielectrics; electrets and magnets; eddy currents, metal detectors and magnetic anomaly detectors; the magnetron; displacement current; Maxwell's equations and the electromagnetic wave equation in free space and in ideal materials; generation and reception of electromagnetic waves; the Poynting vector).