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((Short description|Belgian astrophysicist))
((More citations needed|date=July 2017))
((Use dmy dates|date=September 2020))
((Infobox scientist
|name              = Pol Swings
|image             = Pol Swings.jpg
|image_size       = 150px
|caption           = Pol Swings
|birth_date        = 24 September 1906
|birth_place       = [[Ransart, Belgium|Ransart]], [[Belgium]]
|death_date        = ((Death date and age|df=yes|1983|10|28|1906|9|24))
|death_place       = [[Esneux]], Belgium
|residence         =
|citizenship       =
|nationality       = Belgian
|ethnicity         =
|field             = [[astrophysics|astrophysicist]]
|work_institutions = [[University of Chicago]]
|alma_mater        = [[University of Liège]]
|doctoral_advisor  =
|doctoral_students =
|known_for         = [[spectroscopy]]
|author_abbrev_bot =
|author_abbrev_zoo =
|influences        =
|influenced        =
|prizes            =  [[Francqui Prize]] for Exact Sciences <small>(1948)</small><br>[[Janssen Medal (French Academy of Sciences)|Janssen Medal]] <small>(1961)</small>
|religion          =
|footnotes         =
|signature         =
))

'''Pol F. Swings''' (24 September 1906 – 28 October 1983) was a Belgian [[astrophysics|astrophysicist]] who was known for his studies of the composition and structure of stars and comets. He used [[spectroscopy]] to identify the elements in astronomical bodies, and, in particular, comets. Swings studied at the [[University of Liège]], where he was professor of spectroscopy and astrophysics from 1932 to 1975. He was also a visiting professor at the [[University of Chicago]] in the [[United States]] (1939–43, 1946–52).

From his study of cometary atmospheres, he is credited with the discovery of the '''Swings bands''' and the '''Swings effect'''. Swings bands are emission [[spectral line|line]]s resulting from the presence of certain atoms of carbon; the Swings effect was discovered with the aid of a slit spectrograph and is attributed to [[fluorescence]] resulting partly from solar radiation.

Moreover, Swings studied [[spectroscopy]] of interstellar space and investigated the rotation of stars, as well as nebulae, novae, and variable stars.  Pol Swings was awarded the [[Francqui Prize]] for Exact Sciences in 1948. He was elected to the [[American Academy of Arts and Sciences]] in 1965,<ref>((Cite web |title=Pol Swings |url=https://www.amacad.org/person/pol-swings |access-date=2022-09-28 |website=American Academy of Arts & Sciences |language=en))</ref> and the [[American Philosophical Society]] and the United States [[National Academy of Sciences]] in 1966.<ref>((Cite web |title=APS Member History |url=https://search.amphilsoc.org/memhist/search?creator=Pol+Swings&title=&subject=&subdiv=&mem=&year=&year-max=&dead=&keyword=&smode=advanced |access-date=2022-09-28 |website=search.amphilsoc.org))</ref><ref>((Cite web |title=P. Swings |url=http://www.nasonline.org/member-directory/deceased-members/20000907.html |access-date=2022-09-28 |website=www.nasonline.org))</ref>

In 1981, Swings became a founding member of the [[World Cultural Council]].<ref>((cite web | title = About Us | publisher = [[World Cultural Council]] | url = http://www.consejoculturalmundial.org/about-us/ | access-date = 8 November 2016))</ref>

[[1637 Swings]], an [[asteroid]] of the [[Main belt]] is named after him.

==References==
((Reflist))

((Founding members of the World Cultural Council))

((Authority control))

((DEFAULTSORT:Swings, Pol))
[[Category:1906 births]]
[[Category:1983 deaths]]
[[Category:Scientists from Charleroi]]
[[Category:20th-century Belgian astronomers]]
[[Category:University of Liège alumni]]
[[Category:Academic staff of the University of Liège]]
[[Category:Founding members of the World Cultural Council]]
[[Category:Foreign associates of the National Academy of Sciences]]
[[Category:Presidents of the International Astronomical Union]]
[[Category:Members of the American Philosophical Society]]
[[Category:University of Chicago faculty]]

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