Hendrik C. van de Hulst | |
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 Hendrik C. van de Hulst in 1977 | |
| Born | (1918-11-19)19 November 1918 Utrecht, the Netherlands |
| Died | 31 July 2000(2000-07-31) (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) |
| Scientific career | |
| Fields | Astronomy |
| Institutions | University of Leiden |
| Thesis | Optics of spherical particles (1946) |
| Doctoral advisor | Marcel Minnaert[1] |
| Doctoral students | 26,[2] includingJohan Bleeker,Elly Dekker,[3]Harm Habing,Vincent Icke,Alexander Ollongren,Tim de Zeeuw |
Hendrik Christoffel "Henk" van de Hulst (19 November 1918 – 31 July 2000) was a Dutchastronomer.
In 1944, while a student in Utrecht,[4] he predicted the existence of the21 cm hyperfine line of neutral interstellarhydrogen. After this line was discovered, he participated, withJan Oort andLex Muller, in the effort to useradio astronomy to map out the neutral hydrogen in ourgalaxy, which first revealed its spiral structure. Motivated by the scattering incosmic dust, Van de Hulst studiedlight scattering by spherical particles and wrote his doctoral thesis on the topic,[1] subsequently formulating theanomalous diffraction theory.[5]
He spent most of his career atLeiden 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 theRoyal Netherlands Academy of Arts and Sciences.[7]
Awards
Named after him
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