Skip to main content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.


The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Thermal Diffusivity of H2O near the Critical Point



Jan V. Sengers, Richard A. Perkins, Marcia L. Huber, Bernard Le Neindre


The asymptotic critical behavior of the thermal diffusivity of H2O, deduced from dynamic light-scattering measurements, is shown to be in good agreement with the mode-coupling theory for critical dynamics in fluids. Consistency of the thermal-diffusivity measurements with the critical enhancement of the viscosity of H2O is also demonstrated.
International Journal of Thermophysics


Critical phenomena, H2O, Light scattering, Steam, Thermal conductivity, Thermal diffusivity, Viscosity
Created September 25, 2009, Updated February 19, 2017