News tagged with kilogram

Kilogram celebrates its 125th birthday

The IPK has been the global standard for mass for the last 125 years; it was sanctioned at the first General Conference on Weights and Measures (CGPM) on 7-9 September 1889 in Paris. This is likely to be the last landmark ...

dateSep 25, 2014 in General Physics
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Higher lead levels may lie just below soil surface

A newly published analysis of data from hundreds of soil samples from 31 properties around southern Rhode Island finds that the lead concentration in soil at the surface is not always a reliable indicator of the contamination ...

dateSep 18, 2013 in Environment
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