Time Stood Still

Professor Harold Edgerton of the Massachusetts Institute of Technology, who has won international recognition for his achievements in ultra-high-speed photography, talks about his work and shows some of the remarkable pictures, both still and moving, that he has taken. Also: Weighty Matters - Robin Clarke , Editor of .Science Journal, talks to Dr. Kilmister of King's College, London, about gravitational collapse and new developments in cosmology.