Hans Geiger (original) (raw)

Johannes (Hans) Wilhelm Geiger (September 30, 1882 - September 24, 1945) was a German physicist. Together with Walter M�ller he developed the Geiger counter.

In 1902 Geiger began to study physics and mathematics in Erlangen and later attained a doctorate to 1906. In 1907 he began work with Ernest Rutherford in Manchester. Later in Berlin he developed, together with the graduate student Walter M�ller, the Geiger counter.