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• 14:09, 29 March 2024 Kkmurray talk contribs created page File:Thomson RoPE 1913 Fig21.jpg (https://commons.wikimedia.org/wiki/File:Thomson_RoPE_1913_Fig21.jpg <pre> Description English: Fig 21 from Rays of positive electricity and their application to chemical analyses (1913) by Thomson, J. J. (Joseph John), Sir, 1856-1940 Date 1913 Source Rays of positive electricity and their application to chemical analyses (1913) Author J. J. Thomson</pre>)
• 14:09, 29 March 2024 Kkmurray talk contribs uploaded File:Thomson RoPE 1913 Fig21.jpg (https://commons.wikimedia.org/wiki/File:Thomson_RoPE_1913_Fig21.jpg <pre> Description English: Fig 21 from Rays of positive electricity and their application to chemical analyses (1913) by Thomson, J. J. (Joseph John), Sir, 1856-1940 Date 1913 Source Rays of positive electricity and their application to chemical analyses (1913) Author J. J. Thomson</pre>)