Metrication by year map


Autor:
Authors of BlankMap-World.svg
Credit:
BlankMap-World.svg od various authors
Krótki link:
https://www.plwiki.pl/b/bf70
źródło:
Wikimedia Commons
Wymiary:
2754 x 1398 Pixel (1119694 Bytes)
Opis:
World Map, colour-coded to show the years the countries started of the process of official conversion to the metric system. Using data from PhD thesis by Hector Vera[1] and NIST[2]. Magenta is preliminary 1795, and cyan is 1998; black is for countries having not adopted metric system yet, and grey is for countries with no data on their adoption year. The data used by this map can be viewed by pressing the "Edit" tab and viewing the underlying code.
  1. ↑ Vera, Hector (2011-09) The Social Life of Measures: Metrication in the United States and Mexico, 1789–2004 (PhD dissertation)[1], Sociology and Historical Studies, New School for Social Research, pages 51, 494–497
  2. ↑ (20 maja 1975) The International Bureau of Weights and Measures 1875–1975: NBS Special Publication 420, Washington, D.C.: National Bureau of Standards, s. 244
Licencja:
Public domain

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