Hendrik C. van de Hulst explained

Hendrik C. van de Hulst
Birth Date:1918 11, df=yes
Birth Place:Utrecht, the Netherlands
Death Place:Leiden, the Netherlands
Nationality:Dutch
Field:Astronomy
Work Institutions:University of Leiden
Thesis Title:Optics of spherical particles
Thesis Url:http://adsabs.harvard.edu/full/1946PhDT.........3V
Thesis Year:1946
Doctoral Advisor:Marcel Minnaert
Doctoral Students:26,[1] including Johan Bleeker, Elly Dekker,[2] Harm Habing, Vincent Icke, Alexander Ollongren, Tim de Zeeuw
Known For:21 cm hyperfine line
Anomalous diffraction theory

Hendrik Christoffel "Henk" van de Hulst (19 November 1918 – 31 July 2000) was a Dutch astronomer.

In 1944, while a student in Utrecht,[3] 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 Lex 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,[4] subsequently formulating the anomalous diffraction theory.[5]

He spent most of his career at Leiden University, 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.[6]

In 1956 he became member of the Royal Netherlands Academy of Arts and Sciences.[7]

Books

Honors

Awards

Named after him

Honors

See also

Bibliography

Notes and References

  1. . Consulted on 9 August 2023.
  2. Book: van der Kruit, Pieter C.. Appendix A.4: Oort and His Students: a List of Ph.D. Theses. 10.1007/978-3-030-17801-7. 633–635. Springer International Publishing. Jan Hendrik Oort. Astrophysics and Space Science Library. 2019. 459. 978-3-030-17800-0. 199240526 .
  3. Astronomy Tree profile Hendrik Christoffel van de Hulst
  4. Habing . H. J.. February 2001. Obituaries: Hendrik Christoffel van de Hulst, 1918-2000 . Astronomy & Geophysics . 42 . 1 . 1.33–1.37 . 2001A&G....42a..33H. 10.1046/j.1468-4004.2001.0420011.33.x. free .
  5. Book: van de Hulst, H. C.. Light scattering by small particles. New York. John Wiley and Sons. 1957. 9780486139753.
  6. "Hulst, Hendrik Christoffel van de." in Encyclopædia Britannica (2010)
  7. Web site: Hendrik Christoffel van de Hulst (1918–2000) . . 28 July 2015.
  8. Web site: Hendrik C. van de Hulst Bibliography . Sonoma State University: Department of Physics and Astronomy . . 16 January 2020 .
  9. Web site: Henry Draper Medal . . 24 February 2011 . dead . https://web.archive.org/web/20130126003930/http://www.nasonline.org/about-nas/awards/henry-draper-medal.html . 26 January 2013 .
  10. Web site: Past Winners of the Catherine Wolfe Bruce Gold Medal. Astronomical Society of the Pacific. 24 February 2011. https://web.archive.org/web/20110721092933/http://astrosociety.org/membership/awards/pastbruce.html. 21 July 2011. dead.
  11. Web site: APS Member History . 2022-12-01 . search.amphilsoc.org.
  12. Web site: Hendrik Christoffel van de Hulst . 2022-12-01 . American Academy of Arts & Sciences . en.
  13. Web site: Hendrik C. van de Hulst . 2022-12-01 . www.nasonline.org.

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