Hugo Hildebrand Hildebrandsson, 1900–1910 Robert Thalén, 1900–1903 Klas Bernhard Hasselberg, 1900–1922 Knut Ångström, 1900–1909 Svante Arrhenius, 1900–1927 Gustaf Granqvist, 1904–1922 Vilhelm Carlheim-Gyllensköld, 1910–1934 Allvar Gullstrand, 1911–1929 Carl Wilhelm Oseen, 1923–1944 Manne Siegbahn, 1923–1961 (chairman ?–1957) Henning Pleijel, 1928—1947 Erik Hulthén, 1929–1962 (chairman 1958–1962)[dubious ] Axel E. Lindh, 1935–1960 Ivar Waller, 1945–1972 Gustaf Ising, 1947–1953 Oskar Klein, 1954–1965 Bengt Edlén, 1961–1976 Erik Rudberg, 1963–1972 (chairman 1963–1972) Kai Siegbahn, 1963–1974 (chairman 1973–1974) Lamek Hulthén, 1966–1979 (chairman 1975–1979) Per-Olov Löwdin, 1972–1984 A.M. Harun-ar-Rashid, 1972, 1986, 1993 Stig Lundqvist, 1973–1985 (chairman 1980–1985) Sven Johansson, 1975–1986 (chairman 1986) Gösta Ekspong, 1975–1988 (chairman 1987–1988) Ingvar Lindgren, 1978–1991 (chairman 1989–1991) Carl Nordling, 1985–1997 (chairman 1992–1995) Bengt Nagel, 1986–1997 Erik Karlsson, 1987–1998 (chairman 1997–1998) Cecilia Jarlskog, 1989–2000 (chairman 1999–2000) Tord Claeson, 1992–2000 Mats Jonson, 1997–2005 Sune Svanberg, 1998–2006 Per Carlson, 1999–2007 Lennart Stenflo, 2001–2006 Joseph Nordgren, 2001-2009 (chairman 2008–2009) Ingemar Lundström, 2006–? (chairman 2010–?) Lars Brink, 2008–? Börje Johansson, 2007–?