Pierre Jacquinot

{{short description|French physicist}}

{{Expand French|topic=bio|Pierre Jacquinot|date=January 2012}}

{{Infobox scientist

| image = F et P Jacquinot 1965 PS.jpg

| caption = Pierre Jacquinot (right) and his wife in 1965.

| birth_date = {{Birth date|1910|01|18}}

| death_date = {{Death date and age|2002|09|22|1910|01|18}}

| known_for =Jacquinot's advantage

| fields = Interferometry

| workplaces = Laboratoire Aimé-Cotton

| doctoral_advisor = Aimé Cotton

| notable_students = Janine Connes

}}

Pierre Jacquinot (18 January 1910 – 22 September 2002) was a French physicist.

Jacquinot was a PhD student of Aimé Cotton.{{cite thesis|title=Thèse de Pierre Jacquinot Recherches sur le phénomène de Zeeman dans les champs magnétiques intenses|url=http://tel.archives-ouvertes.fr/tel-00278199/fr/ |website=TEL (thèses-en-ligne)|access-date=24 June 2015|date=28 May 1937 |last1=Jacquinot |first1=Pierre }}

He was director of Laboratoire Aimé-Cotton during almost 20 years (1951–1962 and 1969–1978). From 1962 to 1969 he was appointed director general of CNRS.{{cite web|title=Entretiens avec Pierre Jacquinot |url=http://www.histcnrs.fr/archives-orales/jacquinot.html |author1=J-F Picard |author2=P. E. Mounier-Kuhn|website=HistCNRS|year=1987|access-date=24 June 2015}}

In the mid-1940s, Jacquinot noticed that a Michelson interferometer could be modified by removing the need of a slit to achieve a higher resolution. This result became known as Jacquinot's advantage, published by Jacquinot in 1954. In Laboraotire Aimé–Cotton, he advised the work of {{Ill|Pierre Connes|lt=Pierre|fr}} and Janine Connes who developed the Fourier-transform infrared spectroscopy between 1954 and 1966.{{Cite book |last=Joerges |first=Bernward |title=Instrumentation between science, state and industry |last2=Shinn |first2=Terry |date=2001 |publisher=KLuwer academic |isbn=978-0-7923-6736-9 |series=Sociology of the sciences |location=Dordrecht Boston}}

In 1966 he entered the French Academy of Sciences. He became its president from 1980 to 1982.