1958
DOI: 10.1016/s0031-8914(58)93367-6
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Thermodynamic temperature scale (TL55) in the liquid helium region

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Cited by 73 publications
(6 citation statements)
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“…The application of (1 la) or (1 1 b) requires, at least, a calibration at one temperature (one-point calibration) or two temperatures (two-point calibration), respectively. A vapour-pressure scale derived applying the modified thermodynamic vapour-pressure equation ((10) together with (2) to (8) and an approximation for f (0) is referred to for short as a calibrated thermodynamic vapour-pressure scale. Its uncertainty at a given temperature results from the uncertainty of the correction terms and the magnitude of the correction function at this temperature, where f ( T ) depends on the uncertainties of h (7) and the p-T data at the calibration points.…”
mentioning
confidence: 99%
“…The application of (1 la) or (1 1 b) requires, at least, a calibration at one temperature (one-point calibration) or two temperatures (two-point calibration), respectively. A vapour-pressure scale derived applying the modified thermodynamic vapour-pressure equation ((10) together with (2) to (8) and an approximation for f (0) is referred to for short as a calibrated thermodynamic vapour-pressure scale. Its uncertainty at a given temperature results from the uncertainty of the correction terms and the magnitude of the correction function at this temperature, where f ( T ) depends on the uncertainties of h (7) and the p-T data at the calibration points.…”
mentioning
confidence: 99%
“…In the sixth column oP 3 and oP 4 have been combined to show the effect on P 3 of errors in both P a and P 4 : OP~= OP3 + 0P4 (clP3/clP4)' the derivative being calculated from existing Re 3 and Re 4 temperature scale tables, Tr, [9] and Tr, 55 [25], respectively.…”
Section: Resultsmentioning
confidence: 99%
“…Since the mobile part of the film does not carry any entropy, Af= TSa; and since the heat of vaporization of bulk liquid is An= T(Sa-SI), therefore (2) For An and the entropy of the bulk liquid, SI, we refer the reader to table VI of ref. [25].…”
Section: Calculation Of Film Reflux and Recondensation Correctionsmentioning
confidence: 99%
“…A more complete derivation of the vapourpressure equation is given, e.g. in [14]. In deriving the expression for it is assumed that the influence of higher virial coefficients can be neglected.…”
Section: Thermodynamics Of the Helium Vapour-pressure Relationsmentioning
confidence: 99%