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(Created page with "== Boris de Zirkoff == Zirkoff's sketch of Cromwell Fleetwood Varley covers his career as a telegraphy engineer, including his work on submarine cable faults, the double-current key and relay, and an 1870 device for transmitting sound that anticipated the telephone; he was elected a Fellow of the Royal Society in 1871. The entry also describes Varley's long engagement with Spiritualism from around 1850, including experiments designed to detect fraud in...") |
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