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Metrology

Metrology

Gas-pressure standard gets down to fundamentals

19 Dec 2019 Margaret Harris
Christof Gaiser standing next to a complicated set of metal tubes and wires suspended from the ceiling to a
PTB scientist Christof Gaiser at PTB's dielectric-constant gas thermometer, which is used to measure capacitance. (Courtesy: PTB)
A new standard for pressure measurement that does not rely on artefacts such as mechanical pistons o

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Margaret Harris is an online editor of Physics World
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