References in periodicals archive ?
Significant experimental contributions by NBS began with the work of Hoge and Brickwedde (29), who calibrated an ensemble of resistance thermometers against a gas thermometer to establish a scale (known as the NBS-39 Scale) for the calibration of thermometers from 14K to 83K.
The capability for performing calibrations of thermometers in the cryogenic range (i.e., T < 120 K) has been maintained at NBS/NIST since 1939 starting with the National Bureau of Standards Constant-Volume Gas Thermometer Scale of 1939 (NBS-39 Scale) (29).
Reilly, Realization of the ITS-90 at NIST in the Range 3.0 K to 24.5561 K Using an Interpolating Constant Volume Gas Thermometer, Proceedings of TEMPMEKO'96, edited by P.