SIR NAPIER SHAW—facile princeps, in the group of disheartened but persistent advocates of reform in our heterogeneous units of weight and measurement—proposes in volume 1 of his “Manual of Meteorology ...
If scientists had sacred objects, this would be one of them: a single, closely guarded 137-year-old cylinder of metal, housed in a vault outside of Paris. It is a prototype that precisely defines a ...
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