Emeritus Professor David Barber CEng, CPhys, FIMMM, FInstP joined the Physics Department at the newly-formed University of Essex in 1965, and remained part of the University for over 30 years, while also taking up prestigious posts in America and Hong Kong. He took early retirement in 1996, but continued his ground-breaking research. David was a visionary experimentalist, a brilliant and graceful mentor, and an enabling administrator, and as can be inferred from his scientific legacy, he had a broad, insightful intellectual curiosity. David will be fondly remembered and greatly missed by all his former graduate students, postdoctoral scholars, and colleagues in several countries around the world

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