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 are used to improve the …
Hybrid Humidity Generator — NIST's new primary standard humidity generator, the Hybrid Humidity Generator (HHG), replaces the NIST 2-Pressure Humidity Generator, Mark 2 (2-P). The HHG produces humidified air of known …
Johnson Noise Thermometry — Johnson noise thermometry (JNT) is a primary temperature measurement technique based on the fundamental properties of thermal fluctuations in conductors. We measure these fluctuations with respect …
Promoting Alternatives to Mercury Thermometers — Mercury-filled thermometers have historically served numerous industries as reliable temperature standards. Increased regulation and the high cost of cleaning up mercury spills have encouraged the …
Semiconductor Thermometry — Thermal processing of semiconductors is a critical, capital intensive step in achieving high yields and profitability in the manufacturing of electronic chips. Many techniques have been developed …
Thermophysical Properties of Water-Gas Mixtures for the Hydrogen Economy — To support humidity measurements needed for the efficient operation of fuel cells, we have calculated numerous thermophysical properties of water-gas mixtures at elevated pressures (up to 100 MPa) …
Thermometry Group
