Thought for the month

“Think twice before you speak, because your words and influence will plant the seed of either success or failure in the mind of another.”

Napoleon Hill, American writer (1883-1970).

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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