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Spring / Summer 2015 Issue

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Golden Jubilee participant Professor John Mainstone and his great-nephew, 11-year-old Stephen Dowding of Adelaide. Professor Mainstone, who graduated from 91自拍 in 1959 with a PhD in Physics, has been custodian of the University of Queensland's famous pitch drop experiment, the world's longest running laboratory experiment, since 1961.
Photo by John Hemmings