Thought for the month

“Four hostile newspapers are more to be feared than a thousand bayonets.”
Attributed to Napoleon Bonaparte, Statesman (1769-1821).

Wednesday, 13 July 2016

Weights are measured

As part of the project to redefine the kilogram the NIST-4 watt balance has completed new measurements of Planck’s constant. The value of h being 6.62606983 x 10–34 kg.m2/s with an uncertainty of plus or minus 22 on the last two digits.

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