by Dr. JOHN TAYLOR
Department of Physics,
Queen Mary College, London
We have all been told at school that if you cut a magnet in halves you get two magnets, not just a north and a south pole. The two seem inextricably bound together. But Dr. Taylor suggests that five objects dredged from the sea bed off California recently are each probably the elusive isolated magnetic pole, and he describes the implications of their existence.
