Duffield was Professor of Physics, Reading University, England 1910-1923 and was appointed the inaugural Director of the Solar Physics Observatory, Mount Stromlo near Canberra, in 1924.
Joan Duffield was the daughter of Walter Geoffrey Duffield.
Published by the Australian Science and Technology Heritage Centre on AustehcWeb, April 2004
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Updated 8 November 2007
http://www.austehc.unimelb.edu.au/guides/duff/provlist.htm