Pol Swings

Pol Swings
150px Pol Swings
Born	24 September 1906 Ransart, Belgium
Died	Esneux, Belgium
Nationality	Belgium
Fields	astrophysicist
Institutions	University of Chicago
Alma mater	University of Liège
Known for	spectroscopy
Notable awards	Francqui Prize for Exact Sciences (1948) Janssen Medal (1961)

Pol F. Swings (24 September 1906 – 28 October 1983) was a Belgian 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 lines 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.

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