Interacting with multimedia in physics lectures

Lecture theatres in many universities are commonly being set up with multimedia facilities: on-line computers, colour video projection, audio-visual facilities. How can these facilities be effectively used to enhance lectures and engage students more deeply in their learning? Does a lecturer need to learn new lecturing skills and leave behind years of lecturing habits? The paper addresses the issue of how one can use multimedia in lectures and what is required in preparation. The illustrations come from a second year electronics course for physics students