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Great. I had *just* managed to convince my American friends that the metric
system was more rational...
On Jan 7, 2013 10:51 PM, "Glenn A. Walsh" <[log in to unmask]> wrote:

> ISEN-ASTC-L is a service of the Association of Science-Technology Centers
> Incorporated, a worldwide network of science museums and related
> institutions.
>
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>
> The international standard, a cylinder-shaped hunk of metal that defines
> the fundamental unit of mass, has gained tens of micrograms of mass from
> surface contamination, according to a new study.
>
> As a result, each country that has one of these standard masses has a
> slightly different definition of the kilogram, which could throw off
> science experiments that require very precise weight measurements.
>
>
> http://spacewatchtower.blogspot.com/2013/01/official-kilogram-standard-contaminated.html
>
> gaw
>
> Glenn A. Walsh, Project Director,
> Friends of the Zeiss < http://friendsofthezeiss.org >
> Electronic Mail - < [log in to unmask] >
> SpaceWatchtower Blog: < http://spacewatchtower.blogspot.com/ >
>
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