Journal of Physical Studies 8(2), 103–121 (2004) DOI: https://doi.org/10.30970/jps.08.103 EFFECT OF GRAVITY IN HIGH-TEMPERATURE LIQUIDS NEAR THE CRITICAL POINT A. D. Alekhin, E. G. Rudnikov Taras Shevchenko National University of Kyiv, Faculty of Physics, 2 Glushkov Pr, Kyiv, UA-03022, Ukraine

Experimental and theoretical investigations of spatially inhomogeneous systems under gravity near the critical point have been reviewed in the work. The main attention has been concentrated on the liquid systems with high critical temperatures, in which the phenomenon of gravitational effect is the most highly expressed. The presence of gravity effect gives a possibility for a complex study of different thermodynamic and correlation characteristics for inhomogeneous system in one experiment in a wide range of the thermodynamic parameters (including the critical point); as well as to build the scale equations of state of substance.

Special attention in the work has been paid to different experimental methods for establishing the change of the value of inhomogeneous molecular field in the substance near the critical point. It has been concluded that this change of the inhomogeneous molecular field is caused by the action of the field of the Earth's gravity and it can considerably exceed the gravitational field variable.

PACS number(s): 05.70.Jk, 05.40.-a, 78.35.+c, 78.20.Ci, 51.35.+a

pdf