Thermodynamic Fluctuations and the Fluctuation-Imposed Limit for
In experimental sciences, random processes often place a.
thermodynamic fluctuations temperature measurement↗
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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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High Resolution Thermometers for Ground and Space Applications
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high resolution thermometers random heating cosmic↗
The Lambda Point Experiment in Microgravity
In October 1992 a low temperature experiment was flown on the Space Shuttle in low earth orbit, using the JPL low temperature research facility. The objective of the mission was to measure the heat capacity and thermal relaxation of helium very close to the lambda point with the smearing effect of gravity removed.
Lambda Point↗
Heat Capacity and Thermal Relaxation of Bulk Helium
A low temperature experiment was flown on the Space Shuttle in low earth orbit.
isolation system↗
Critical Phenomena in Microgravity: Past, Present, and Future
This review provides an overview of the progress in using the low-gravity environment of space to explore critical phenomena and test modern theoretical predictions. Gravity-induced variations in the hydrostatic pressure and the resulting density gradients adversely affect ground-based measurements near fluid critical points. Performing measurements in a low-gravity environment can significantly reduce these difficulties. A number of significant experiments have been performed in low-Earth orbit. Experiments near the lambda transition in liquid helium explored the regime of large correlation lengths and tested the theoretical predictions to a level of precision that could not be obtained on Earth. Other studies have validated theoretical predictions for the divergence in the viscosity as well as the unexpected critical speeding up of the thermal equilibrium process in pure fluids near the liquid-gas critical point. We describe the scientific content of previously flown low-gravity investigations of critical phenomena as well as those in the development stage, and associated ground-based work.
renormalization-group theory↗