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Metrology

Pressure & vacuum metrology

News and Updates

Blog Posts

Stephen Eckel wears dark safety glasses as he peers into the complex CAVS apparatus in a darkened lab.

How Low Can Temperature Go? Lord Kelvin and the Science of Absolute Zero

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Header graphic depicting images related to Blaise Pascal: a barometer, a drawing of Blaise Pascal, and a bike tire

Under Pressure: Blaise Pascal, the Barometer and Bike Tires

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Jimmy Doolittle in an airplane cockpit

How NIST Helped Hero Pilot Jimmy Doolittle Fly

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Publications

Accurate, precise pressure sensing with tethered optomechanics

Author(s)
Olivia Green, Yiliang Bao, John R. Lawall, Jason Gorman, Daniel Barker
We show that optomechanical pressure sensors with characterized density and thickness can achieve uncertainty as low as 1.1 % via comparison with a secondary

Effect of ''glancing'' collisions in the cold atom vacuum standard

Author(s)
Stephen Eckel, Daniel Barker, James A. Fedchak, Jacek Klos, Julia Scherschligt, Eite Tiesinga
We theoretically investigate the effect of "glancing" collisions on the ultra-high-vacuum pressure readings of the cold-atom vacuum standard (CAVS), based on
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