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Thermometry metrology

News and Updates

Doing the Nano-Shimmy

Imagine a single particle, only one-tenth the diameter of a bacterium, whose miniscule jiggles induce sustained

Projects and Programs

Thermometry

The NIST Thermodynamic Metrology Group maintains and develops national standards of temperature (in the range 0.65 K to 1235 K), and supports calibration of all

Nanocalorimetry Measurements

Nanocalorimetry Measurements provide a capability to measure heats of reaction of nanoscale samples with nanojoule sensitivity to detect reactions and quantify

Acoustic Thermometry

By measuring the speed of sound in argon gas, we have determined thermodynamic temperature with unprecedented accuracy in the range 0 °C to 552 °C. Our results

Publications

Johnson Noise Thermometry

Author(s)
Weston L. Tew, Jifeng Qu, K L. Zhou, Samuel P. Benz, Horst Rogalla, David R. White
Johnson noise thermometers infer thermodynamic temperature from measurements of the thermally-induced current fluctuations that occur in all electrical

REFRACTIVE-INDEX GAS THERMOMETRY

Author(s)
Patrick Rourke, Christof Gaiser, Roberto M. Gavioso, Michael R. Moldover, Laurent Pitre, Robin Underwood
The principles and techniques of primary refractive-index gas thermometry (RIGT) are reviewed. Absolute primary RIGT using microwave measurements of helium

Tools and Instruments

Awards