Arnold Wolfendale, University of Durham, at The Royal Society, 6-9 Carlton House Terrace, London, SW1, 1pm, free 020 7451 2500, www.royalsociety.org
Arnold Wolfendale, University of Durham, at The Royal Society, 6-9 Carlton House Terrace, London, SW1, 1pm, free 020 7451 2500, www.royalsociety.org