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Establishment of a temperature scale for the calibration of thermometers between 14 degrees and 83 degrees K
1939
Journal of research of the National Bureau of Standards
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Seven resistance thermometers (six Pt; one 90Pt:10Rh alloy) have been calibrated on the thermodynamic scale by comparison with a helium gas thermometer. The boiling point of oxygen was taken to be 90.19° K, and computations were made in such a w ay as to secure continuity between the International Temperature Scale and the scale being established. On the latter scale the triple point of normal h ydrogen was found to be 13.96° K and the boiling point 20.39° K. Tables have been prepared by means
doi:10.6028/jres.022.036
fatcat:3sxv7leozbazrdekkpcolcbnau