Bulletin of the American Physical Society
2007 APS April Meeting
Volume 52, Number 3
Saturday–Tuesday, April 14–17, 2007; Jacksonville, Florida
Session E12: Alternative Theories of Gravity |
Hide Abstracts |
Sponsoring Units: GGR Chair: Jens Gundlach, University of Washington Room: Hyatt Regency Jacksonville Riverfront City Terrace 8 |
Saturday, April 14, 2007 3:30PM - 3:42PM |
E12.00001: Scalar Gravitational Theory with Variable Rest Mass D.T. Froedge In this paper we will present the mechanical dynamics of a gravitational system resulting from a specific, rest mass, scalar potential relation, that is equivalent in predicting orbital and photon motion to that of General Relativity in the weak field solutions. The weak solutions of General Relativity do not appear to be contradicted by this development, and in this range the physical difference may not be measurable. The strong field solutions will be significantly different, however since, in this scalar relation, the rest mass goes to zero at Schwarzschild boundary. The consequences of the mass dependence gravitational potential results, for large masses, not in the prediction of black holes, but rather mass to Gamma ray converters. The theory would suggest that the defined gamma ray sources emissions of the galactic center imaged by the ESA/INTEGRAL spacecraft could be from bodies close to the maximum mass. [Preview Abstract] |
Saturday, April 14, 2007 3:42PM - 3:54PM |
E12.00002: Is there a cosmological influence on the quantum-classical transition? C.L. Herzenberg Calculations appear to indicate that the distinction between quantum and classical behavior may be based in part on the presence of cosmic expansion velocities within the spatial regions occupied by extended objects (C. Herzenberg, Physics Essays, December 2006). The range of magnitudes and directions of the extraordinarily small cosmic recessional velocities within an extended object taken together with the Heisenberg uncertainty relation appears to require an uncertainty in spatial position dependent upon the size of the object. Specifying that such an uncertainty in position be smaller than the size of the object defines a critical size that may provide a fundamental limit distinguishing the realm of objects governed by classical laws from those governed by quantum mechanics. The talk will present an overview of this topic and include derivation of results, including those pertaining to several related phenomena; and specific cases will be discussed. [Preview Abstract] |
Saturday, April 14, 2007 3:54PM - 4:06PM |
E12.00003: Geometry + 4-potentials = Unified Field Theory Doug Sweetser Geometry without a potential is like a bed without a lover. The Riemann curvature tensor is only about the change in moving around the manifold, the geometry of the bed sheet. The exterior derivative of the EM field strength tensor is only about changes in the potential, isolated from geometry. In my work, changes in the potential lay on top of changes in the manifold. A covariant 4D wave equation can describe both gravity and light. The metric solution passes weak field tests of gravity and tests of the equivalence principle. At higher resolution, 0.8 microacrseconds more bending of light around the Sun is predicted than GR. Quantize using the Gupta/Bleuler method, but the scalar and longitudinal modes are the spin 2 graviton. [Preview Abstract] |
Saturday, April 14, 2007 4:06PM - 4:18PM |
E12.00004: Rotation of Spiral Galaxies Described with a Simple Disc Gravitational Model James Feng, C.F. Gallo The measured rotation velocity profiles of mature spiral galaxies are described with a simple disc gravitational model, withOUT need for large spherical halos of Dark Matter. Our approach utilizes Newtonian gravity/mechanics to search (via computer) with maximum flexibility for mass distributions that satisfy the measured rotational velocity profiles. This model utilizes a finite disc of uniform thickness but variable density. Our deduced mass distributions differ somewhat from those previously used, primarily with less mass concentrated at the center and more mass distributed toward the galactic periphery. Most previous research assumes a density maximum at the galactic center decaying exponentially with radius analogous to the measured light distribution. But this assumption is weak since the temperature is an important variable. These prior models do NOT describe the measured velocity profiles, and recourse is made to Dark Matter or gravitational deviations to compensate. By contrast, our results indicate no Dark Matter and no deviations from simple gravity. [Preview Abstract] |
Saturday, April 14, 2007 4:18PM - 4:30PM |
E12.00005: Rotation of Spiral Galaxies Described with Various Sphere/Disc Gravitational Models C.F. Gallo, James Feng The measured rotation velocity profiles of spiral galaxies are described with a wide variety of ``Sphere and/or Disc'' gravitational models, withOUT need for halos of Dark Matter. Our approach utilizes Newtonian gravity/mechanics to search (via computer) with flexibility for mass distributions that satisfy the measured rotational velocity profiles. The many models involve various combinations of spherical bulges and/or thin discs, including research of Marmet and Nicholson and Mizony and Peratt. The deduced mass distributions differ from those previously used, with less mass at the center and more mass toward the periphery. Some models exhibit persistent bulges at the galactic rim (as observed in some galaxies). Most previous research assumes a density maximum at the galactic center decaying exponentially with radius by analogy to the light distribution curves. But this assumption is weak. The temperature is an important variable and molecular H2 should be included per Marmet. These prior models do NOT describe the measured velocity profiles and recourse is made to Dark Matter or gravitational deviations to compensate. By contrast, all our results indicate no Dark Matter and no deviations from simple gravity. [Preview Abstract] |
Saturday, April 14, 2007 4:30PM - 4:42PM |
E12.00006: Toward a kinetic theory of gravity Fred Pierce, Yariv Pierce We propose that gravity can be explained in terms of motion. The constant, uniform motion of mass through the universe creates the ubiquitous, isotropic force -- gravity. The resulting isotropic structure is consistent with the results of the Michelson-Morley experiment. The expectation of an ``ether wind'' has been improper since the Earth is in a balanced state of motion and an unbalanced force is necessary to generate any reciprocal wind. Inertial mass and gravitational mass are always of the same magnitude because they are equal and opposite effects. Recognizing motion as the origin of gravitational energy is a natural conclusion to integrating gravitation with other forms of energy so that it, too, can be understandable in terms of other phenomena. [Preview Abstract] |
Saturday, April 14, 2007 4:42PM - 4:54PM |
E12.00007: Gravity like forces in sap conducting tissue in plants. Orvin Wagner I used miniature brass shielded Entran accelerometers in small holes in tree tissue to measure forces (penetrating the brass shield) in the direction of sap flow. These forces increased with sap flow up to 22{\%} of gravity magnitude. It is assumed that measured forces would have been larger except for the presence of the distorting hole. These forces were measured in horizontal roots and vertical trunks (here a gravity decrease). Distances of mm. between the tissue and the accelerometer, over which the measured forces acted, could only be compared to gravity. The force's penetration of the brass shield also indicates gravity like forces. See e.g. \textit{Physiol.} \textit{Chem. Phys. {\&} Med. NMR} (1995) 27: 31-34 and other publications of the author. The present generally presented controversial explanation of sap flow up tall trees apparently needs modification. Plant produced forces provide an incredible alternative. The macroscopic behavior of plants has so far been mostly ignored by physicists. The study of plants may answer some fundamental questions about gravity. (Earlier observations of weight loss in hanging weights in sap conducting tissue in bent trees led to the above work). [Preview Abstract] |
Saturday, April 14, 2007 4:54PM - 5:06PM |
E12.00008: Gravity related waves in plants. Claudia Wagner, Orvin Wagner Calculations using sets of plant internodal spacings and actual measurements give wave velocity ratios and actual velocities. Plant shapes seem to derive from these gravity related waves. The velocities of the waves increase in jumps as their direction of travel changes from vertical to horizontal. The calculated ratios of the vertical velocity to the horizontal velocity are ratios of small integers. Short chunky trees like apple have a small velocity ratio (calculated ratio for apple 4/3) while tall spindly trees like ponderosa pine (3/1) have a large ratio. Measured wave velocities for Ponderosa pine are: 1207$\pm $60 cm/s for horizontal and 3469$\pm $170cm/s for vertical. The plant internal structure seems to determine the velocity ratio. e.g. see \textit{Physiol. Chem. Phys. {\&} Med. NMR} (1996) 28: 173-196 and later papers by O.E. Wagner. The results might indicate that gravity is a wave phenomenon since plants respond to gravity in a wavelike fashion. Plants waves seem to have a limited set of frequencies and a recent observation is that they are the same in every direction. The latter permits one to write some very enlightening equations. [Preview Abstract] |
Saturday, April 14, 2007 5:06PM - 5:18PM |
E12.00009: ABSTRACT WITHDRAWN |
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2024 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700