Classical and Quantum Interaction of the Dipole

A unified and fully relativistic treatment of the interaction of the electric and magnetic dipole moments of a particle with the electromagnetic field is given. New forces on the particle due to the combined effect of electric and magnetic dipoles are obtained. Four new experiments are proposed, three of which would observe topological phase shifts.Comment: 10 pages, Latex/Revtex. Some minor errors have been correcte

Influence of gender and locality on achievement in physics among matriculation students of Krishnagiri district of Tamilnadu

The aim of the present study was to measure the influence of Gender and Locality on the Achievement in Physics among the Matriculation Students of Krishnagiri District of Tamil Nadu. The study belongs to the Normative Survey Research. The sample consists of 350 students of which 190 Urban and 160 Rural students. There are 234 boys and 116 girls totally. The investigators constructed an Achievement Test in Physics consisting of 120 items with 4 alternatives. To find out the significant difference with regard to the variables,lf test was followed. It was found that the achievement of boys in physics in Urban Matriculation schools were significantly higher than their counter part. The higher achievement of the Urban boys and Urban girls may be due to the reasons of higher motivation of the parents, higher instructional facilities, competition among the motivated students and higher students general awareness

Gravitational Phase Operator and Cosmic Strings

A quantum equivalence principle is formulated by means of a gravitational phase operator which is an element of the Poincare group. This is applied to the spinning cosmic string which suggests that it may (but not necessarily) contain gravitational torsion. A new exact solution of the Einstein- Cartan-Sciama-Kibble equations for the gravitational field with torsion is obtained everywhere for a cosmic string with uniform energy density, spin density and flux. A novel effect due to the quantized gravitational field of the cosmic string on the wave function of a particle outside the string is used to argue that spacetime points are not meaningful in quantum gravity.Comment: 22 pages, to be published Phys. Rev. D. Some minor changes have been made and a reference has been added to the paper of D.V. Gal'tsov and P.S. Letelier, Phys. Rev. D 47 (1993) 4273, which first contained the metric (2.2) external to the cosmic string. The present paper extends this solution to a regular solution inside the string as wel

Action principle formulation for motion of extended bodies in General Relativity

We present an action principle formulation for the study of motion of an extended body in General Relativity in the limit of weak gravitational field. This gives the classical equations of motion for multipole moments of arbitrary order coupling to the gravitational field. In particular, a new force due to the octupole moment is obtained. The action also yields the gravitationally induced phase shifts in quantum interference experiments due to the coupling of all multipole moments.Comment: Revised version derives Octupole moment force. Some clarifications and a reference added. To appear in Phys. Rev.

Design of Flying Disk

The flying object, which is the disk shape (sphere) having rotating and non-rotating parts. This can fly at both space and atmosphere having high speed by using the modified rotary wing concept, which is the vortex created by the blade tips is also used as the thrust along with the lift produced by the blades. The additional lift also created by the disk when the blade angle of attack changes. The blades do not connected in the same point and it connected in some degree in the sphere. The blades/wings attached to the iron like ring to cooperate with the high magnetic field, i.e. it rotates with the principle of magnetic levitation followed by this, and vertical takeoff and can land at any place

Geometric phases for mixed states in interferometry

We provide a physical prescription based on interferometry for introducing the total phase of a mixed state undergoing unitary evolution, which has been an elusive concept in the past. We define the parallel transport condition that provides a connection-form for obtaining the geometric phase for mixed states. The expression for the geometric phase for mixed state reduces to well known formulas in the pure state case when a system undergoes noncyclic and unitary quantum evolution.Comment: Two column, 4 pages, Latex file, No figures, Few change

Fatty acid signatures of the Indian mackerel Rastrelliger kanagurta (Cuvier)from the Arabian Sea along the Indian coast

The fatty acid profile of the Indian mackerel Rastrelliger kanagurta from the Arabian Sea was studied in relation to its maturation and spawning cycle. Among fatty acids, polyunsaturated fatty acids (PUFA) component was the highest (46.9%) followed by saturated fatty acids (SFA) and monounsaturated fatty acids (MUFA) at 41.8% and 11% respectively. No differences were observed between the period of low spawning activity in January and peak spawning activity in May. However significant (p<0.05) differences were observed with regard to sex where females had higher levels of SFA and MUFA while males had higher levels of PUFA. With regard to maturity stages, only females showed significant differences (p<0.05) in MUFA content with higher level in mature stages compared to immature stages. Docosahexaenoic acid (DHA) was the single largest component of PUFA. The absence of marked temperature differences in the Arabian Sea probably precludes seasonal effects on the levels of SFA, MUFA and PUFA in the Indian mackerel while variations of individual FA within these groups indicate lipid dynamics in relation to reproduction and feeding

Reply to `Singularities of the mixed state phase'

The only difference between Bhandari's viewpoint [quant-ph/0108058] and ours [Phys. Rev. Lett. 85, 2845 (2000)] is that our phase is defined modulo $2\pi$, whereas Bhandari argues that two phases that differ by $2\pi n$, $n$ integer, may be distinguished experimentally in a history-dependent manner.Comment: 2 page