Hendrik C. van de Hulst
Hendrik C. van de Hulst
Hendrik C. van de Hulst in 1977
|Born||19 November 1918|
Utrecht, the Netherlands
|Died||31 July 2000 (aged 81)|
Leiden, the Netherlands
|Known for||21 cm hyperfine line|
Anomalous diffraction theory
|Awards||Henry Draper Medal (1955)|
Eddington Medal (1955)
Rumford Medal (1964)
Bruce Medal (1978)
Karl Schwarzschild Medal (1995)
|Institutions||University of Leiden|
|Thesis||Optics of spherical particles (1946)|
|Doctoral advisor||Marcel Minnaert|
In 1944, while a student in Utrecht, he predicted the existence of the 21 cm hyperfine line of neutral interstellar hydrogen. After this line was discovered, he participated, with Jan Oort and C.A. Muller, in the effort to use radio astronomy to map out the neutral hydrogen in our galaxy, which first revealed its spiral structure. Motivated by the scattering in cosmic dust, he studied light scattering by spherical particles and wrote his doctoral thesis on the topic, subsequently formulating the anomalous diffraction theory.
He spent most of his career at the University of Leiden, retiring in 1984. He published widely in astronomy, and dealt with the solar corona, and interstellar clouds. After 1960 he was a leader in international space research projects.
- Henry Draper Medal of the National Academy of Sciences (1955)
- Eddington Medal of the Royal Astronomical Society (1955)
- Rumford Medal of the Royal Society (1964)
- Bruce Medal of the Astronomical Society of the Pacific (1978)
- Karl Schwarzschild Medal of the Astronomische Gesellschaft (1995)
Named after him
- Habing, H. J. (February 2001). "Obituaries: Hendrik Christoffel van de Hulst, 1918-2000". Astronomy & Geophysics. 42 (1): 1.33–1.37. Bibcode:2001A&G....42a..33H. doi:10.1046/j.1468-4004.2001.0420011.33.x.
- Astronomy Tree profile Hendrik Christoffel van de Hulst
- van de Hulst, H. C. (1957). Light scattering by small particles. New York: John Wiley and Sons. ISBN 9780486139753.
- "Hulst, Hendrik Christoffel van de." in Encyclopædia Britannica (2010)
- "Hendrik Christoffel van de Hulst (1918–2000)". Royal Netherlands Academy of Arts and Sciences. Retrieved 28 July 2015.
- "Hendrik C. van de Hulst Bibliography". Sonoma State University: Department of Physics and Astronomy. Sonoma State University. Retrieved 16 January 2020.
- "Henry Draper Medal". National Academy of Sciences. Archived from the original on 26 January 2013. Retrieved 24 February 2011.
- "Past Winners of the Catherine Wolfe Bruce Gold Medal". Astronomical Society of the Pacific. Archived from the original on 21 July 2011. Retrieved 24 February 2011.
- Tenn, Joe. "Hendrik Christoffel van de Hulst". Sonoma State University. Retrieved 5 January 2007.
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