Old notices
These pages collect together notices posted on the IUCr web site in past years. They are retained for archival interest, but there is no guarantee (or likelihood) that many of the web links found in these notices will still be active.
Theo Hahn (1928-2016)
![]Theo Hahn]](https://www.iucr.org/__data/assets/image/0003/119469/Theo-Hahn-Photo.jpg)
With great sadness we have to inform you that Prof. Dr Theo Hahn passed away on 12 February 2016, only a few weeks after his 88th birthday.
Theo Hahn was Chair of Crystallography at RWTH Aachen University from 1963 until 1993, and founder and Director of the Institute of Crystallography. He was internationally recognized and valued as an outstanding academic teacher and scientist, with profound contributions, inter alia, to theoretical crystallography and symmetry theory. He was also an Editor and author for International Tables for Crystallography. Theo Hahn was awarded the Abraham-Gottlob-Werner-Medal of the German Mineralogical Society (DMG, 1997) and the Carl-Hermann-Medal of the German Crystallographic Association (DGK, 2001), of which he had been an Honorary Member since 1997. From his various commitments in scientific organizations we restrict ourselves to mention that he was Chair of the German Mineralogical Society (DMG) 1982–1984, and President of the International Union of Crystallography (IUCr) 1984–1987.
The Institute of Crystallography of RWTH Aachen and the community of crystallographers worldwide will miss Theo Hahn as an inspiring spell-binding teacher, and a wonderful person.
Gernot Heger and Georg Roth, Aachen