It is 50 years to the day since King George VI opened the Festival of Britain, declaring it to be a "symbol of abiding courage and vitality". Quentin Coopertalksto Dr Norman Lisgarten from Imperial College London and Dr Sophie Forgan from Teeside University about the science and technology it showcased.
Producer John Watkins. E-MAIL: material.world@bbc.co.uk Doctor Digital: page 19