Helge Kragh has worked as Professor of History of Science at the University of Oslo, Norway, and Aarhus University, Denmark, and is presently Emeritus Professor at the University of Copenhagen. Since 2001 he has been a member of the Royal Danish Academy of Sciences and Letters, and 2008-2010 he served as President of the European Society for History of Science. Most of his research has focused on the historical development of post-1800 physics, chemistry, astronomy, and cosmology.