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Antigravity Bibliography - 11

------------------------------------- From: sphinx@world.std.com (John Sangster, SPHINX Technologies) Subject: Weight Reduction in Spinning Masses Date: Fri, 3 Nov 1995 06:04:35 GMT Recently Hideo Hayasaka and Sakae Takeuchi of the Engineering Faculty at Tohoku University in Japan have published an experimental result of this sort. They found that gyroscopes spinning clockwise as seen from above, at their location, exhibited a decrease in relative mass of 5.07 x 10^-5 and 4.22 x 10^-5 respectively for the two gyroscope configurations studied. (Weight was multiplied by 1-e where e is the relative factors given above, if I haven't botched up in my arithmetic.) The effect as plotted in the paper I saw appears to be perfectly linear to within reasonable experimental error, thus giving a rotational velocity at which the weight would go to zero which I made out to be 3.27 MHz (million rotations per second) in the first case and 3.95 MHz in the second. That was with CLOCKWISE rotation as seen from above. With COUNTERclockwise rotation, the same experimental setup showed ZERO EFFECT. Zip. Nada. Nichts. Nyechevo. You get the idea. For one thing, this result makes it almost certain that they are NOT dealing with bad lab technique. Not to mention the fact that they spent nearly a year and a half going over and over their setup and trying to answer all objections by the reviewers of their Physical Review Letters paper (it eventually appeared in PRL (63 2701)). As far as I know, nobody has published a theoretical model that accounts for these observations. The idea of a physical phenomenon that appears only in one direction of rotation is rather unprecedented. I know of only one other mathematical/physical phenomenon that does this, and I'm trying to understand how the two might be related, but without success as yet. -- John Sangster ------------------------------------------------------------------------- Physicist Alex Harvey wrote an article about the Hayakawa-Taguechi experiment. The article was published in: Nature, Aug 23 1990, Vol 346 Page 705 You'll also find other references there. Harvey shows mathematically that an angular momentum vector aligned antiparallel to the local gravitational field violates the equivalence principle. He also shows that the path of a spinning body under gravity need not be geodesic. Here are two "holes" in GR that seem to account for the behavior of H & T's gyros. New experiments should be designed to force the asymmetry to appear, as predicted by theory, rather than passively leave the results to chance. There is a dimensional error of Hayasaka and Takeuchi which CAN be corrected by supplying a quantity that restores proper dimensionality. In simplest terms, H and T's result looks like: { deltaN = - (proportionality constant) m w r } where deltaN is the weight change in Newtons, m is the mass of the rotor in kg, w is the rotation frequency in angular units and r is the radius of the rotor in meters. The units of the missing quantity are radians per second. The rotation, w, has already been counted. The missing quantity is the precession, Wp. With clockwise rotation, the vector J points down the spin axis, while the precession vector, Wp, points up the spin axis. Physicist Alex Harvey, writing about H and T's results, confirmed that there is no (symmetrical) weight gain, no effect at all, with counter-clockwise rotation, J (up). In this case, says Harvey, "[J] is parallel to the gravitational field." -- laradex3@sj.znet.com AUTHOR(s): Harvey, Alex TITLE(s): Complex Transformation of the Kasner Metric. In: General relativity and gravitation. OCT 01 1989 v 21 n 10 Page 1021 AUTHOR(s): Harvey, Alex TITLE(s): Cosmological models. In: American journal of physics. OCT 01 1993 v 61 n 10 Page 901 AUTHOR(s): Harvey, Alex TITLE(s): Identities of the scalars of the four-dimensional Riemannian manifold. In: Journal of mathematical physics. JAN 01 1995 v 36 n 1 Page 356 AUTHOR(s): Harvey, Alex TITLE(s): Will the Real Kasner Metric Please Stand Up. In: General relativity and gravitation. DEC 01 1990 v 22 n 12 Page 1433 ----------------------------------------------------------------------- > Maybe I've missed it, but I've looked seriously, and there seems > to be no information in undergraduate or graduate level physics > reference books which mentions the relationship between > macroscopic and microscopic angular momentum -- much less > provides any analysis or explanation linking quantum angular > momentum to macroscopic angular momentum. You're catching on. The subject of compound angular momentum, or internal and external angular momentum, or intrinsic and extrinsic angular momentum has been a repressed subject for about 2 and half decades. Add to that list, spherical pendulums, Coriolis effect, except as applied to balistics and meteorology as used by the US military, and Shafer's pendulum, that neat little device used as the artifical horizon of aircraft. > How does quantum angular momentum become organized from a > microscopic to a macroscopic level? Has anyone ever published > any work about this? I can't find any. There isn't any that I know of, though back in the late fifties, there was a fellow named Edward Condon at the University of Colorado who was fairly proficient on the subject. So much so that he wrote the rotational dynamics section, called noninertial dynamics at the time, of the reference "The Handbook of Physics" which he also co-edited (Chapter 5). I don't recall offhand who the publisher was (Harcourt/Brace?), though it was endorsed by the American Institute of Physics. Later, when Mr Condon was the head of the USAF project 'Blue Book', he labored to supress his own work when the directive was handed down from the Navy's Turtle Island project. -- James Youlton ------------------------------------------------------------------------ In the Barnett effect a long iron cylinder, when rotated at high speed about its longitudinal axis, is found to develop a measurable component of magnetization, the value of which is proportional to the angular speed. The effect is attributed to the influence of the impressed rotation upon the revolving electronics systems due to the mass property of the unpaired electrons within the atoms. -- Henry Wallace ----------------------------------------------------------------------- Barnett, S.J., "Magnetization By Rotation," The American Physical Society, Second Series, vol. VI, No. 2, Jun., 1915, pp. 171-172. Barnett, S.J., "Magnetization By Rotation," The Physical Review, Second Series, vol. VI., No. 4, Oct., 1915, pp. 239-270. ------------------------------------------------------------------------ The Barnett Effect is known to me as the effect of a change in volume of a magnetic material in response to a change in it's magnetization strength. If a ferrite material is exposed to a higher magnetization field (more current through the coil) the ferritd will change in volume. I was not aware that this has anything to do with alignment to a spinning axis. For further information about this aspect of the Barnett effect, see: Ref. Handbook of Magnetic Phenomena, by Harry S Burk, Van Nostrand Reinhold 1986 Page 262. -- William Clymer ------------------------------------------------------------------- Magnetic systems with competing interactions : frustrated spin systems / edited by H.T. Diep. Singapore ; River Edge, N.J. : World Scientific, c1994. xiv, 335 p. : ill. ; 24 cm. LC CALL NUMBER: QC754.2.S75 M34 1994 SUBJECTS: Magnetization. Rotational motion. Spin waves. Ferromagnetism. CONTENTS: Nonlinear phenomena and chaos in magnetic materials / P.E. Wigen -- Some nonlinear effects in magnetically ordered materials / H. Suhl -- Spin-wave instability processes in ferrites / M. Chen & C.E. Patton -- Spin-wave dynamics in a ferrimagnetic sphere: experiments and models / P.H. Bryant, D.C. Jeffries, & K. Nakamura -- Spin-wave auto-oscillations in YIG spheres driven by parallel pumping and subsidiary resonance / S.M. Rezende & A. Azevedo -- Strong chaos in magnetic resonance / M. Warden -- Magnetostatic modes in thin films / R.D. McMichael & P.E. Wigen -- Fractal properties in magnetic crystal / H. Yamazaki -- Spin-wave envelope solitons in magnetic films / A.N. Slavin, B.A. Kalinikos, & N.G. Korshikov. ISBN: 9810210051 ---------------------------------------------------------------------------- Hence the Wilson-Blackett proportionality between the angular momentum of planets, stars etc and their magnetic moment. For more information see Science News Aug 6 '94 p82. -------------------------------------------------------------------------- AUTHOR(s): Bloxham, Jeremy Gubbins, David TITLE(s): The Evolution of the Earth's Magnetic Field. Summary: The origin of the field has fascinated more than a dozen generations of physicists. Molten iron in the outer core, driven by convection and influenced by the earth's rotation, acts as a dynamo that generates the field. Now historical records of magnetic-field changes yield new insights into the process and into how the field may behave in the future. In: Scientific American. DEC 01 1989 v 261 n 6 Page 68 AUTHOR(s): Malov, I.F. TITLE(s): Angle between the magnetic field and the rotation axis in pulsars. In: Soviet astronomy. MAR 01 1990 v 34 n 2 Page 189 AUTHOR(s): Marsheva, N. M. TITLE(s): Permanent rotation of a heavy rigid body in a magnetic field. In: Moscow university mechanics bulletin. 1989 v 44 n 1 AUTHOR(s): Vitale, S. Bonaldi, M. Falferi, P. TITLE: Magnetization by rotation and gyromagnetic gyroscopes. Summary: We discuss how the general phenomenon of magnetization by rotation may be used probe the angular velocity of the laboratory with respect to a local frame of inertia. We show that gyroscope with no moving parts based on this pheno- In: Physical review B: Condensed matter. JUN 01 1989 v 39 n 16 p B Page 11993 ------------------------------------------------------------------------- CONDENSED MATTER THEORY, ABSTRACT COND-MAT/9509141 From: Erwin Frey Date: Fri, 22 Sep 1995 09:43:52 +0200 Critical Dynamics of Magnets Authors: Erwin Frey , Franz Schwabl (TU Muenchen) Comments: Review article (154 pages, figures included) We review our current understanding of the critical dynamics of magnets above and below the transition temperature with focus on the effects due to the dipole--dipole interaction present in all real magnets. Significant progress in our understanding of real ferromagnets in the vicinity of the critical point has been made in the last decade through improved experimental techniques and theoretical advances in taking into account realistic spin-spin interactions. We start our review with a discussion of the theoretical results for the critical dynamics based on recent renormalization group, mode coupling and spin wave theories. A detailed comparison is made of the theory with experimental results obtained by different measuring techniques, such as neutron scattering, hyperfine interaction, muon--spin--resonance, electron--spin--resonance, and magnetic relaxation, in various materials. Furthermore we discuss the effects of dipolar interaction on the critical dynamics of three--dimensional isotropic antiferromagnets and uniaxial ferromagnets. Special attention is also paid to a discussion of the consequences of dipolar anisotropies on the existence of magnetic order and the spin--wave spectrum in two--dimensional ferromagnets and antiferromagnets. We close our review with a formulation of critical dynamics in terms of nonlinear Langevin equations. --------------------------------------------------------------------------- Paper: cond-mat/9501029 From: Kazuhiro Kuboki Date: Mon, 09 Jan 1995 10:40:11 EST Title: Proximity-induced time-reversal symmetry breaking at Josephson junctions between unconventional superconductors Author: Kazuhiro Kuboki and Manfred Sigrist We argue that a locally time-reversal symmetry breaking state can occur at Josephson junctions between unconventional superconductors. Order parameters induced by the proximity effect can combine with the bulk order parameter to form such a state. This property is specifically due to the intrinsic phase structure of the pairing wave function in unconventional superconductors. Experimental consequences of this effect in high-temperature superconductors are examined. Paper: cond-mat/9501088 From: David Benedict Bailey Date: Thu, 19 Jan 1995 11:34:10 -0800 (PST) Title: Gapless Time-Reversal Symmetry Breaking Superconductivity Authors: A. M. Tikofsky and D. B. Bailey We consider a layered superconductor with a complex order parameter whose phase switches sign from one layer to the next. This system is shown to exhibit gapless superconductivity for sufficiently large interlayer pairing or interlayer hopping. In addition, this description is consistent with experiments finding signals of time-reversal symmetry breaking in high-temperature superconductors only at the surface and not in the sample bulk. Paper: cond-mat/9501133 From: ioffe@physics.rutgers.edu (Lev Ioffe) Date: Mon, 30 Jan 95 08:59:22 EST Title: On the spin density wave transition in a two dimensional spin liquid. Authors: B. L. Altshuler, L. B. Ioffe, A. I. Larkin, A. J. Millis. Strongly correlated two dimensional electrons are believed to form a spin liquid in some regimes of density and temperature. As the density is varied, one expects a transition from this spin liquid state to a spin density wave antiferromagnetic state. In this paper we show that it is self-consistent to assume that this transition is second order and, on this assumption, determine the critical behavior of the 2p_F susceptibility, the NMR rates T1 and T2 and the uniform susceptibility. We compare our results to data on high Tc materials. Paper: gr-qc/9502041 From: Barry Haddow Date: Fri, 24 Feb 1995 18:59:15 (GMT) Title: Purely Magnetic Spacetimes Author: Barry Haddow (Trinity College, Dublin, Ireland) Purely magnetic spacetimes, in which the Riemann tensor satisfies R_{abcd}u^bu^d=0 for some unit timelike vector u^a, are studied. The algebraic consequences for the Weyl and Ricci tensors are examined in detail and consideration given to the uniqueness of u^a. Some remarks concerning the nature of the congruence associated with u^a are made. Paper: cond-mat/9502103 From: deb@rri.ernet.in (Debnarayan Jana) Date: Fri, 24 Feb 95 11:23:21+050 Title: Universal Diamagnetism of Charged Scalar Fields Authors: Debnarayan Jana We show that charged scalar fields are always diamagnetic, even in the presence of interactions and at finite temperatures. This generalises earlier work on the diamagnetism of charged spinless bosons to the case of infinite degrees of freedom. ------------------------------------------------------------------------ "CP Violation and Antigravity Revisited", G. Chardin, Nuclear Physics, Jun 7 1993, Vol 558 "Equivalence Principal Violation, Antigravity and Anyons Induced by Gravitational Chern-Simons Couplings", S. Deser, Classical and Quantum Gravity, 1992, Vol 9 Supp "The Arguments Against Antigravity and the Gravitational Acceleration of Anti-Matter", Michael Martin, Physics Reports, Jul 1 1991, Vol 205 "Empirical Limits to Antigravity", Ericson & Richter, Europhysics Letters, Feb 15 1990, Vol 11 no 4 "Chern-Simons Quantizations of (2+1) Anti-de Sitter Gravity on a Torus", K. Ezawa, Classical and Quantum Gravity, Feb 1 1995 Vol 12 No 2 "Green's Function for Anti-de Sitter Space Gravity", Gary Kleppe, Physical Review d: Particles, Fields, Gravity; Dec 15 1994 Vol 50 No 12 "Lowest Eigenvalues of the Energy Operator for Totally Anti Symmetric Massless Fields of the N-Dimensional Anti-de Sitter Group", R.R. Metsaev, Classical and Quantum Gravity, Nov 1 1994, Vol 11 No 11 "The Positivity of Energy for Asymptotically Anti-de Sitter Spacetimes", E. Woolgar, Classical and Quantum Gravity, Jul 1 1994, Vol 11 No 7 "Vacuum Polarization Near Asymptotically Anti-de Sitter Black Holes in Odd Dimensions", Shiraishi & Maki, Classical and Quantum Gravity, Jul 1 1994, Vol 11 No 7 "Strong Anti Gravity: Life in the Shock Wave", Fabbrichesi & Roland, Nuclear Physics B, Dec 21 1992, Vol 388 No 2 "Global Solutions of Yang-Mills Equations on Anti-de Sitter Spacetime", Choquet-Bruhat, Classical and Quantum Gravity, Dec 1 1989, Vol 6 No 12 "The Scalar Wave Equation on Static de Sitter and Anti-de Sitter Spacetimes", D. Polarski, Classical and Quantum Gravity, Jun 1 1989 "Lehman Representation of the Spinor Two-Point Function in Anti-de Sitter Space", E. Gath, Classical and Quantum Gravity, May 1 1989, Vol 6 no 5 -------------------------------------------------------------------------- Dr. Bernhard Haisch has modeled inertial mass as deriving from an accelerated body's interaction with the zero point field (ZPF), consonant with a large body of refereed physics literature. Haisch in Feb 1994 Phys. Rev. A Science vol 263 p 612 Scientific American vol 270, p 30 New Scientist 25 Feb 1995 p 30 ------------------------------------------------------------------------- "Gravity as a Zero-Point-Fluctuation Force," H.E. Puthoff, Physical Review A: General Physics. Mar 1 1989, Vol39 No 5 -------------------------------------------------------------------------- The 4 February 1994 issue of Science magazine has an article about a new theory of inertia. A recent paper by Bernhard Haisch, Alfonso Rueda and Hal Puthoff in the 1 Feb 1994 issue of Physical Review A, based on earlier work by Andrei Sakharov, derives inertia from quantum electromagnetic vacuum fluctuations. The idea is that if inertia is due to some strange quantum EM effects, it might be understood and controlled, and even neutralized. Haisch is at the Lockheed Palo Alto laboratories, Rueda, at Cal. State. Long Beach, and Puthoff at the Institute for Advanced Studies in Austin Texas. Needless to say, this new theory is serious, but very controversial physics. A test is planned later this year at the SLAC linear accelerator by exposing a high energy electron beam to terawatt laser. Keep tuned! -- John H. Chalmers Jr -------------------------------------------------------------------------- A recent controversial theory of Austin Institute for Advanced Study physicist Hal Puthoff and his collaborators Haisch and Rueda appears to explain gravity as not an intrinsic property of matter but as an indirect consequence of Maxwellian electromagnetic radiation, namely that (as earlier suggested by the late Russian dissenter Sakharov) gravity is a "shadow effect" similar to the Casimir Effect of quantum electrodynamics. Bass points out that if the Haisch-Puthoff-Rueda theory is correct then Hodowanec's idea of tapping the earth's gravity field in some electromagnetic way not hitherto suggested is conceivable. - Joel McClain ---------------------------------------------------------------------- Puthoff and his collaborators have gone so far as to use SED (Stochastic Electro-Dynamics) to _explain_ both gravitational & inertial mass and to show their equivalence, and to derive Newton's F = Ma, and to derive Mach's principle (without which Einstein admitted that no theory of gravity could claim to be complete), and to derive Dirac's "cosmological numerical coincidences" as inevitabilities, and to derive Newtonian gravity, and to derive the Newton-Cavendish parameter G!!! -- Robert Bass ------------------------------------------------------------------------- It is an amazing coincidence that the total Newtonian gravitational potential energy of any object due to all masses in the universe is equal in magnitude to its total energy, at least to within a small factor, considering that this involves an expression involving multiple factors of the order of 10 to the 40th power. This was pointed out by Dirac in his Large Numbers Hypothesis, and used as part of a beautiful illustrative theory by Dennis Sciama [1], in which he constructs a theory of gravity closely analogous to the classical theory of electromagnetism, and shows that inertia can be directly attributed to the gravitational effect of accelerating relative to the gravitational potential sources of the whole universe (or indeed of accelerating the whole universe relative to the object, because in Sciama's theory, the two points of view are equivalent). This theory is obviously consistent with Mach's Principle (which is effectively that inertial motion is in some sense relative to the rest of universe). Sciama's theory is only a simplified approximation, but it is so neat that it seems likely that some similar principle must apply also within General Relativity. However, one of its most basic implications is that the gravitational "constant" G would depend on the distribution of matter in the universe, which seems to be in direct conflict with GR. I personally think GR is probably not quite right. -- Jonathan Scott [1] D.W.Sciama, "On the Origin of Inertia", M.N.R.A.S. Vol. 113, p34, 1953. ----------------------------------------------------------------------- GENERAL RELATIVITY & QUANTUM COSMOLOGY, ABSTRACT GR-QC/9412012 From: "Haret Rosu" Date: 3 Dec 94 19:36:00 CST Classical and quantum inertia: a heuristic introduction, Author(s): Haret C. Rosu Report: IFUG-27/94, Comments: 20 pages, LaTex 11pt, no figures. A non-technical discussion of the problem of inertia is provided both in classical physics and in the quantum world. After briefly reviewing the classical formulations (WEP, EEP, and SEP), I pass to a presentation of the equivalence statements for quantum vacuum states. One can also find a number of related comments and suggestions. ------------------------------------------------------------------- ---End of Page 11--- -------------------------------------------------------------------Back to Main Links Page To Stirniman AG Bibliography - Page 12