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You searched on: Author: michael moldover

Displaying records 81 to 90 of 109 records.
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81. Thermophysical Properties of Process Gases
Published: 11/1/1999
Authors: John J. Hurly, Michael R Moldover
Abstract: We measured the speed of sound in the process gases Cl^d2^, HBr, BCl^d3^, and in the surrogate gases SF^d6^, CF^d4^, and C^d2^F^d6^. The data range up to 475 K (200 C) and from 25 kPa to 1500 kPa (or to 80% of the vapor pressure for condensable gas ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=831552

82. Frequency-Dependent Viscosity of Xenon Near the Critical Point
Published: 10/1/1999
Authors: Robert F Berg, Michael R Moldover, G A Zimmerli
Abstract: We used a novel, overdamped oscillator aboard the Space Shuttle to measure the viscosity {eta} of xenon near its critical density {rho}^dc^ and temperature T^dc^. In microgravity, useful data were obtained within 0.1 mK of T^dc^, corresponding to a ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=832041

83. Electrostriction of Near-Critical SF^d6^ in Microgravity
Published: 6/1/1999
Authors: G A Zimmerli, R A Wilkinson, R A Ferrell, Michael R Moldover
Abstract: We used interferometry to measure the electric-field-induced (I.e., electrostrictive) increase of the density of sulfur hexafluoride near its critical point. The results at the temperatures T^dc^ + 5 mK, T^dc^ + 10 mK, and T^dc^ + 30 mK, with T^dc^ ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=831529

84. Primary Acoustic Thermometer for Use Up to 800 K
Published: 4/1/1999
Authors: Dean C Ripple, Dana R Defibaugh, Keith A Gillis, Michael R Moldover
Abstract: Primary acoustic thermometers determine the thermodynamic temperature of a monatomic gas from measurements of the speed of sound in the gas. Here, we describe the design and construction of an acoustic thermometer designed to operate at temperatures ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=830628

85. Primary Acoustic Thermometry From 217 K to 303 K
Published: 4/1/1999
Authors: Michael R Moldover, S J. Boyes, A R. Goodwin, Christopher W Meyer
Abstract: We report new values for the difference (T T^d90^) between Kelvin thermodynamic temperatures T and ITS-90, the International Temperature Scale of 1990. The new data span the range 217 K {less then or equal to} T 303 K with standard uncertainties of ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=831545

86. Thermodynamic Temperatures of the Triple Points of Mercury and Gallium and in the Interval 217 K to 303 K
Series: Journal of Research (NIST JRES)
Published: 2/1/1999
Authors: Michael R Moldover, S J. Boyes, Christopher W Meyer, A R. Goodwin
Abstract: We measured the acoustic resonance frequencies of an argon-filled spherical cavity and the microwave resonance frequencies of the same cavity when evacuated. The microwave data were used to deduce the thermal expansion of the cavity and the acoustic ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=831512

87. Viscoelasticity of Xenon Near the Critical Point
Published: 2/1/1999
Authors: Robert F Berg, Michael R Moldover, G A Zimmerli
Abstract: Using a novel, overdamped, oscillator flown aboard the Space Shuttle, we measured the viscosity of xenon near the liquid-vapor critical point in the frequency range 2 Hz [less than or equal to} f {less than or equal to} 12 Hz. The measured viscosity ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=831516

88. Introduction to: Critical Point Wetting
Published: 12/1/1998
Authors: Michael R Moldover, M Schick
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=100734

89. The Static Dielectric Constant of Liquid Water Between 274 and 418 K near the Saturated Vapor Pressure
Published: 12/1/1998
Authors: J O. Hamelin, J B. Mehl, Michael R Moldover
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=100682

90. Critical Viscosity of Xenon: Surprises and Scientific Results
Published: 10/1/1998
Authors: Robert F Berg, Michael R Moldover, G A Zimmerli
Abstract: The Critical Viscosity of Xenon (CVX) experiment, which flew on board Space Shuttle flight STS-85 in August 1997, measured the viscosity of xenon near the liquid-vapor critical point. Very close to the critical temperature (T^dc^ = 290 K), the visco ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=831511



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