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www.southgatearc.org
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Beyond the Kilogram: Redefining the international system of unitsThe world’s official standard for mass - a 115-year-old cylinder of metal - will likely join the meter bar as a museum piece in the near future. Will the standards for electric current, temperature, and amount of substance soon follow? The full article can be seen on the National Institute of Standards & Technology (NIST) website http://www.nist.gov/public_affairs/newsfromnist_beyond_the_kilogram.htm |
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