Editing Linus Pauling (section)

===Higher education===
[[File:LinusPaulingGraduation1922.jpg|thumb|left|Pauling's graduation photo from [[Oregon State University]], 1922]]

In his first semester, Pauling registered for two courses in chemistry, two in mathematics, mechanical drawing, introduction to mining and use of explosives, modern English prose, gymnastics and military drill.{{r|GoGo|p=26}} His roommate was childhood pal and lifelong best friend Lloyd Jeffress.<ref name=Linus>{{cite web|last1=Pauling|first1=Linus|title=Life with Lloyd Jeffress, June 5, 1986|url=https://paulingblog.wordpress.com/2009/07/02/paulings-best-friend-lloyd-jeffress/|website=The Pauling Blog|publisher=Oregon State University Libraries Special Collections and Archives Research Center|access-date=1 June 2016|date=2009-07-02}}</ref>  He was active in campus life and founded the school's chapter of the [[Delta Upsilon]] fraternity.<ref>{{Cite web |last=Swanson |first=Stephen |date=October 3, 2000 |title=OSU fraternity to donate Pauling treasures to campus library |url=http://oregonstate.edu/ua/ncs/archives/2000/oct/osu-fraternity-donate-pauling-treasures-campus-library |url-status=dead |archive-url=https://web.archive.org/web/20160303202915/http://oregonstate.edu/ua/ncs/archives/2000/oct/osu-fraternity-donate-pauling-treasures-campus-library |archive-date=March 3, 2016 |access-date=April 29, 2013 |website=[[Oregon State University]] |language=en}}</ref> After his second year, he planned to take a job in Portland to help support his mother. The college offered him a position teaching [[Quantitative analysis (chemistry)|quantitative analysis]], a course he had just finished taking himself. He worked forty hours a week in the laboratory and classroom and earned {{currency|100|USD}} a month (equivalent to {{currency|{{inflation|US|100|1920|r=-2}}|USD}} in {{inflation/year|US}}), enabling him to continue his studies.{{r|GoGo|p=29}}

In his last two years at school, Pauling became aware of the work of [[Gilbert N. Lewis]] and [[Irving Langmuir]] on the [[electronic structure]] of atoms and their [[chemical bond|bonding]] to form [[molecule]]s.{{r|GoGo|p=29}} He decided to focus his research on how the [[physical property|physical]] and [[chemical property|chemical properties]] of substances are related to the structure of the atoms of which they are composed, becoming one of the founders of the new science of quantum chemistry.<ref name=":0" />

Engineering professor Samuel Graf (1887–1966)<ref>{{cite web|url=https://engineering.oregonstate.edu/alumni-partners/oregon-stater-awards/searchable-awards-database/samuel-graf-engineering-hall-fame |title=Samuel Graf : Engineering Hall of Fame - 1998 &#124; College of Engineering &#124; Oregon State University |date=3 October 2022 }}</ref><ref>{{cite web |date=25 July 1966 |title=Long-Time OSU Faculty Man, Sam Graf, Dies |url=https://www.newspapers.com/article/corvallis-gazette-times/31584297/ |website= |publisher=[[Corvallis Gazette-Times]] |via=[[Newspapers.com]]}}</ref> selected Pauling to be his teaching assistant in a mechanics and materials course.{{r|GoGo|p=29}}<ref name="OSUArchives">{{Cite web |title=Pauling's Years as an Undergraduate at Oregon Agricultural College, Part 2 (1919–1922) |url=http://scarc.library.oregonstate.edu/coll/pauling/chronology/page6.html |url-status=live |archive-url=https://web.archive.org/web/20211031065844/http://scarc.library.oregonstate.edu/coll/pauling/chronology/page6.html |archive-date=October 31, 2021 |access-date=May 27, 2015 |website=[[Oregon State University]]}}</ref><ref name="Marinacci">{{Cite book |last=Pauling |first=Linus |url=https://archive.org/details/linuspaulinginhi0000paul |title=Linus Pauling: in his own words : selected writings, speeches, and interviews |date=1995 |publisher=[[Simon & Schuster]] |isbn=978-0-684-81387-5 |editor-last=Marinacci |editor-first=Barbara |location=New York City |page=39 |language=en-us |author-mask=4 |access-date=May 27, 2015 |url-access=registration |via=[[Internet Archive]]}}</ref> During the winter of his senior year, Pauling taught a chemistry course for [[family and consumer science|home economics]] majors. It was in one of these classes that Pauling met his future wife, [[Ava Helen Pauling|Ava Helen Miller]].{{r|GoGo|p=31}}{{r|Marinacci|p=41}}<ref>{{Cite web |title=Linus Pauling Biographical Timeline |url=http://lpi.oregonstate.edu/lpbio/timeline.html |url-status=live |archive-url=https://web.archive.org/web/20220302113523/https://lpi.oregonstate.edu/about/linus-pauling-biographical-timeline |archive-date=March 2, 2022 |access-date=November 10, 2011 |website=[[Linus Pauling Institute]] |publisher=[[Oregon State University]] |language=en-us}}</ref><ref name="AvaBook">{{Cite news |last=Richard |first=Terry |date=May 3, 2013 |title=Ava Helen Pauling, wife of Linus Pauling, subject of biography by Corvallis author Mina Carson |language=en |work=[[The Oregonian]] |url=http://www.oregonlive.com/books/index.ssf/2013/05/ava_helen_pauling_wife_of_linu.html |url-status=live |url-access=subscription |access-date=June 2, 2015 |archive-url=https://web.archive.org/web/20210513195013/https://www.oregonlive.com/books/2013/05/ava_helen_pauling_wife_of_linu.html |archive-date=May 13, 2021 |issn=8750-1317}}</ref>

In 1922, Pauling graduated with a degree in [[chemical engineering]]. He went on to graduate school at the [[California Institute of Technology]] (Caltech) in [[Pasadena, California]], under the guidance of [[Roscoe G. Dickinson|Roscoe Dickinson]] and [[Richard C. Tolman|Richard Tolman]].<ref name="mathgene" /> His graduate research involved the use of [[X-ray diffraction]] to determine the structure of [[crystal]]s. He published seven papers on the [[crystal structure]] of minerals while he was at Caltech. He received his PhD in [[physical chemistry]] and [[mathematical physics]],<ref name="paulingphd" /> [[summa cum laude]], in 1925.<ref>{{Cite web |date=June 12, 1925 |title=Commencement 1925 California Institute of Technology Pasadena |url=http://caltechcampuspubs.library.caltech.edu/2537/1/1925.pdf |url-status=live |archive-url=https://web.archive.org/web/20201101163715/http://caltechcampuspubs.library.caltech.edu/2537/1/1925.pdf |archive-date=November 1, 2020 |access-date=March 29, 2013 |publisher=[[California Institute of Technology]]}}</ref>