What is James Cronin?
{{Infobox scientist | name = James Watson Cronin | image = James-cronin.jpg | image_size = | caption = Cronin at the 2010 [[Nobel Laureate Meetings at Lindau|Lindau Nobel Laureate Meeting]] | birth_date = {{Birth date|1931|09|29|mf=yes}} | birth_place = [[Chicago, Illinois]], [[United States|U.S.]] | death_date = {{death date and age|2016|8|25|1931|9|29}} | death_place = [[Saint Paul, Minnesota]], U.S. | nationality = [[United States]] | field = [[Physics]] | work_institutions = [[University of Chicago]] | alma_mater = [[Southern Methodist University]]<br>[[University of Chicago]] (Ph.D.) | doctoral_advisor = | doctoral_students = | known_for = [[Nuclear physics]] | influences = | influenced = | prizes = [[Nobel Prize in Physics]]<br>[[The Franklin Institute Awards|John Price Wetherill Medal]]<br>[[National Medal of Science]] | footnotes = }} {{nobelprize|Physics}}'''James Watson Cronin''' (September 29, 1931 &ndash; August 25, 2016) was an [[Americans|American]] [[nuclear physics|nuclear physicist]]. Cronin and co-researcher [[Val Logsdon Fitch]] were awarded the 1980 [[Nobel Prize in Physics]] for a 1964 experiment that proved that certain subatomic reactions are not the same as to fundamental symmetry principles (called [[CP violation]]).<ref>[http://www.nsf.gov/od/nms/recip_details.cfm?recip_id=93 National Science Foundation - The President's National Medal of Science]</ref> Cronin died on August 25, 2016 in [[Saint Paul, Minnesota]] at the age of 84.<ref>{{Cite web | url=https://www.washingtonpost.com/national/health-science/james-cronin-nobel-laureate-who-broke-seemingly-inviolable-laws-of-subatomic-particles-dies-at-84/2016/08/28/4f4cb70a-6c62-11e6-8225-fbb8a6fc65bc_story.html |title = James Cronin, Nobel laureate who overturned long-accepted beliefs about the fundamental symmetry of laws of physics , dies at 84}}</ref><ref>{{Cite news | url=https://www.nytimes.com/2016/08/31/s