Produced by the Nuffiled Foundation of Unit for the History of ideas, Time Is, directed by Don Levy (Herostratus), is an experimental collage film looking at the scientific problems connected with the nature of time. Alternating between original and `found' footage such as newsreels, sports footage, nature photography, the film uses a number of techniques including slow motion, time-lapse and single-frame filming, negative imagery and juxtaposition.