Since 2004 I am retired from the KVI (Kernfysisch Versneller Instituut) of the University of Groningen (NL).
My current interest is in refraction of light in the atmosphere and its anomalies, Fata Morgana's and the Novaya Zemlya phenomenon and in the history of celestial navigation.

Articles in English and Dutch on these topics may be found in the menu under Publications.
Presentations and (source) files of programs are under the header OTHER STUFF in the MENU.

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