Editing Seth Neddermeyer (section)

==Later years==
In 1946, after World War II ended, Neddermeyer left Los Alamos to become an [[associate professor]] at the  [[University of Washington]], where he would spend the rest of his career. In due course he became a full professor.<ref name="acap">{{cite web |url=https://www.aip.org/history/acap/biographies/bio.jsp?neddermeyers |title=Seth Neddermeyer |publisher=Array of Contemporary American Physicists |access-date=December 30, 2015 |url-status=dead |archive-url=https://web.archive.org/web/20160201140900/https://www.aip.org/history/acap/biographies/bio.jsp?neddermeyers |archive-date=February 1, 2016 |df=mdy-all }}</ref> He resumed his studies of cosmic rays using a cloud chamber and a new device that he invented to measure the speed of charged particles known as a "chronotron". He was particularly interested in the properties of the muon, and conducted experiments with muons at [[SLAC]]. He participated in the [[DUMAND Project]], for which he helped design large-scale underwater [[neutrino]] detectors.<ref name="Physics Today"/> Neddermeyer became interested in [[parapsychology]], insisting, in spite of the skepticism of many colleagues, that it warranted proper scientific investigation.<ref name="Physics Today"/><ref name="Oral"/> He retired in 1973, becoming a [[professor emeritus]],<ref name="acap"/> but he continued his research activities for as long as his health permitted. He was afflicted with [[Parkinson's disease]].<ref name="obit"/>

In 1982, he was presented with the [[United States Department of Energy|Department of Energy]]'s [[Enrico Fermi award]]. His citation read:{{blockquote|For participating in the discovery of the positron, for his share in the discovery of the muon, the first of the subatomic particles; for his invention of the implosion technique for assembling nuclear explosives; and for his ingenuity, foresight, and perseverance in finding solutions for what at first seemed to be unsolvable engineering difficulties.<ref>{{cite web |title=Seth Neddermeyer, 1982 |publisher=-U.S. DOE Office of Science (SC) |url=http://science.energy.gov/fermi/award-laureates/1980s/neddermeyer/ |access-date=December 30, 2015 }}</ref> }}

In later life, Neddermeyer was sometimes troubled by the nuclear weapons he had helped to invent.<ref name="Physics Today"/> He told an interviewer in 1983:{{blockquote|I get so overwhelmed by a feeling of terrible guilt when I think about the history of the bomb. I'm terribly worried now about the current world situation. What the hell can we do about it?<ref name="obit">{{cite news |newspaper=[[The Washington Post]] |date=February 2, 1988 |title=Seth Neddermeyer, 80, dies |url=https://www.washingtonpost.com/archive/local/1988/02/02/seth-neddermeyer-80-dies/95e11307-e574-487d-bebc-6e6bbc2dfb7e/ |access-date=December 30, 2015 }}</ref> }}

Neddermeyer died in [[Seattle]] on  January 29, 1988,<ref name="Physics Today" />  from complications of Parkinson's disease.<ref>{{cite news|title=A-bomb scientist dies at age 80|url=https://www.newspapers.com/clip/912541/abomb_scientist_dies_at_age_80/?|access-date=August 24, 2014|work=The San Bernardino County Sun|date=February 1, 1988|page=6|via=[[Newspapers.com]]}} {{Open access}}</ref>