This news article from the National Physical Laboratory describes how physicists updated an experimental test of special and general relativity by flying atomic clocks around the world. The article includes an image of the data, clearly illustrating the result, and also a photo of the traveling clocks.
National Physical Laboratory. Time Flies. Middlesex: National Physical Laboratory, February 1, 2011. http://web.archive.org/web/20190303092231/https://www.npl.co.uk/news/time-flies (accessed 1 December 2022).
%0 Electronic Source %D February 1, 2011 %T Time Flies %I National Physical Laboratory %V 2022 %N 1 December 2022 %8 February 1, 2011 %9 image/jpeg %U http://web.archive.org/web/20190303092231/https://www.npl.co.uk/news/time-flies
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