Description: Segment 1 Dr Garlick introduces the topic, saying that she will explain the theory of NMR using classical physics rather than quantum mechanics wherever possible. Animated diagrams show nuclei spinning about their axes and Garlick explains their behaviour in relation to a large magnetic field applied in the vertical direction. She also discusses nuclei at thermal equilibrium a formula is shown. She explains why different nuclei have different precessional frequencies. She uses the analogy of a motorway to explain precessional frequencies and how to measure them. Still and animated images are used as aids. Time start: 00:00:00:00 Time end: 00:05:35:04 Length: 00:05:35:04 Segment 2 Garlick discusses continuous wave NMR and Fourier transform NMR. The latter method was used by biochemists. She explains this faster method of NMR and how to obtain a spectrum with it images of molecules are used as aids in her examples. After discussing many theoretical examples she discusses a practical example of using a biological sample such as an isolated heart. End credits. Time start: 00:05:35:04 Time end: 00:12:58:11 Length: 00:07:23:04