
Accession Number : ADP006635
Title : Thermodynamics and Gravity,
Corporate Author : ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS
Personal Author(s) : Weiss, Richard A.
Report Date : MAR 1992
Pagination or Media Count : 28
Abstract : A calculation of the effects of a gravitational field on the state equations of real materials is presented. The effects arise from the broken symmetry of the spacetime coordinates of the region in which the gravity field is located. The form of the laws of thermodynamics for matter located in a gravity field is investigated by applying the broken spacetime symmetry forms of the first and second laws of thermodynamics. In a gravity field the laws of thermodynamics are dependent on the internal phase angles theta r(r) of the radial coordinates of a gravitating mass, and this dependence can also be expressed in terms of the gravitational constant Gr(r) whose value depends on radial distance. In this way the effects of a gravity field on the state equations of real gases, solids and quantum liquids is determined. The Debye theory of solids is generalized to include the case of a solid located in a gravity field. This paper suggests thermodynamic measurements that can be used to determine Gr(r) for a planetary gravity field. Because the internal phase angles of the radial coordinates are related to the photon redshift in a gravity field it is suggested that the photon redshift may be used to determine the variation of Gr(r) with radial distance.
Descriptors : *EQUATIONS OF STATE, *GRAVITATIONAL FIELDS, *THERMODYNAMICS, ANGLES, CONSTANTS, COORDINATES, EQUATIONS, GRAVITY, INTERNAL, LIQUIDS, MASS, MATERIALS, MEASUREMENT, PAPER, PHASE, PHOTONS, REGIONS, SOLIDS, SYMMETRY, THEORY, VALUE, VARIATIONS.
Subject Categories : Thermodynamics
Astrophysics
Distribution Statement : APPROVED FOR PUBLIC RELEASE