Frank Close is a particle physicist, author and speaker. He was the Gresham Professor of Astronomy between 2000 and 2003. He is Professor of Physics at the University of Oxford and a Fellow of Exeter College, Oxford. He was formerly vice president of the British Association for Advancement of Science, Head of the Theoretical Physics Division at the Rutherford Appleton Laboratory and Head of Communications and Public Education at CERN. He is the author of several books, including the best-selling Antimatter, and the winner of the Kelvin Medal of the Institute of Physics for his "outstanding contributions to the public understanding of physics."
All of Professor Close's lectures can be accessed here.