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![The Not-So-Perfect Kilogram and Why the Metric System Might Be ...]()
mentalfloss.com22 May 2014 ... Although it's arguably the world's most famous weight, Le Grand K doesn't get out much. Since hydrocarbons on fingertips or moisture in the air ...瀏覽：964 -
![Kilogram - Wikipedia, the free encyclopedia]()
en.wikipedia.orgThe kilogram is the only SI base unit with an SI prefix ("kilo", symbol "k") as part of its name. It is also the only SI unit that is still directly defined by an artifact ...瀏覽：348
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日期：2024-07-17
The International Prototype Kilogram, Or Le Grand K. By greg on August 25, 2009
7:31 AM. johnson_matthey_kilos.jpg. Caught this on the CBC last night....
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日期：2024-07-17
27 Sep 2011 ... Familiarly known as Le Grand K and held in a vault just outside of Paris under
three bell jars, it dates back to the 1880s, when it was forged by ......
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日期：2024-07-21
9 Nov 2007 ... Le Grand K was kept at the International Bureau of Weights and Measures (BIPM
) in Sevres in France and the others were distributed around ......
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日期：2024-07-20
27 Aug 1998 ... The French call the object "Le Grand K," and for good reason. Since 1883, this
platinum cylinder about the size of a film canister has been the ......
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日期：2024-07-15
28 Jan 2011 ... In a vault on the outskirts of Paris sits a platinum cylinder known as Le Grand K,
the international prototype for the kilogram. But over the years, ......
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日期：2024-07-21
13 May 2009 ... Le Grand K is the physical standard for a unit of mass representing the kilogram,
which is kept near Paris at the Bureau International des Poids ......
瀏覽：1374
日期：2024-07-18
What is the poem les grands seigneurs about? Overview:-) At first the woman (the
speaker) thought the man of being great, they were verything to her, the ......
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