About the Author
Kevin Knowles, PhD is a Fellow of Churchill College, Cambridge and a former Director of Studies in Natural Sciences at the College. He is also a Senior University Lecturer in the Department of Materials Science and Metallurgy at Cambridge University, UK.
Anthony Kelly, PhD was a Founding Fellow of Churchill College Cambridge and Director of Studies in Natural Sciences at the College. He also worked at the National Physical Laboratory and Imperial Chemical Industries before becoming Vice-Chancellor of Surrey University. Professor Kelly returned to Cambridge as a Fellow of Churchill College in 1994.