Grace's Guide

British Industrial History

Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 143,389 pages of information and 230,040 images on early companies, their products and the people who designed and built them.

Richard Whiddington

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University of Leeds.

1921 Patented a shadow electroscope. [1]

See Also

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Sources of Information

  1. The Engineer 1921/07/01