(1882–1945) German physicist,
who carried out research with Rutherford at Manchester University before returning to Germany in 1912. In 1908 he and Rutherford produced the Geiger counter, improved in 1928 as the Geiger-Muller counter. In 1909 his scattering experiments with alpha particles led to Rutherford's nuclear theory of the atom.
Subjects: Science and Mathematics.