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Sir William Fletcher Barrett (1844 in Kingston, Jamaica – 1925) was an English physicist. He was born in Jamaica where his father, William Garland Barrett, who was an amateur naturalist, Congregationalist minister and a member of the London Missionary Society, ran a station for saving the souls of emancipated African slaves. The family returned to their native England in Royston, Hertfordshire in 1848.

He discovered Stalloy, a silicon-iron alloy used in electrical engineering. He also did research work on the divining rod, and helped found the Society for Psychical Research. Barrett was Professor of Physics at Dublin University.


  • This article incorporates text from The Modern World Encyclopædia: Illustrated (1935); out of UK copyright as of 2005.


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