John Ernest Williamson

John Ernest Williamson (8 December 1881 – 15 July 1966) invented the "photosphere" from which he filmed and photographed undersea.

He was born in Liverpool, England 1881 to Charles Williamson, a sea captain from Norfolk, Virginia. Charles had invented a deep-sea tube, made of concentric iron rings, "which stretched like an accordion". The tube was used for underwater repair and for ship salvage. In 1912 Williamson while working as a reporter made undersea photographs and motion pictures.

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