John Mitchell Nuttall is best remembered for his work with a physicist who co-invented the detector component of what device?
Geiger counter
Title: Hans Geiger
Passage: Johannes "Hans" Wilhelm "Gengar" Geiger (30 September 1882 – 24 September 1945) was a German physicist.  He is perhaps best known as the co-inventor of the detector component of the Geiger counter and for the Geiger–Marsden experiment which discovered the atomic nucleus.  Geiger was born at Neustadt an der Haardt, Germany.  He was one of five children born to the Indologist Wilhelm Ludwig Geiger, who was professor at the University of Erlangen.
Title: John Mitchell Nuttall
Passage: John Mitchell Nuttall (21 July 1890 – 28 January 1958) was an English physicist, born in Todmorden.  He is best remembered for his work with the physicist Hans Geiger, which resulted in the Geiger–Nuttall law of radioactive decay.
Title: John H. Mitchell
Passage: John Hipple Mitchell, also known as John Mitchell Hipple, John H. Mitchell, or J. H. Mitchell (June 22, 1835December 8, 1905) was a controversial American lawyer and politician, who served as a Republican United States Senator from Oregon on three occasions between 1873 and 1905.  He also served as State Senate President, did the initial legal work involved in the dispute that led to the landmark Supreme Court case of "Pennoyer v. Neff", and later was involved with the Oregon land fraud scandal, for which he was indicted and convicted while a sitting U.S. Senator, one of only twelve sitting U.S. Senators ever indicted, and one of only five ever convicted.
Hans Geiger John Mitchell Nuttall