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      Knowledge is Power

      Scientific American March 19, 1921

      From the Einstein Contest--IV

      The Principle of Relativity--A Statement of What It Is All About, in Ideas of One Syllable By Shinglewood (Hugh Elliot, Chislehurst, Kent, England)

      • March 19, 1921

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      More in the March 19, 1921 issue of Scientific American
      • Better Railway Ticket Selling, Rats and Canvas
      • Outwitting the French Customs
      • Canada's New Parliament Buildings
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