A: Physics & Space Science (178)
GJSFR: A
Some Mathematical and Physical Errors of Wald on General Relativity
Published In: GJSFR Part: A: Physics & Space Science Volume: 13 Issue: 2
In spite of including crucial errors, Wald’s book has become a standard reference, in part, because the 1993 No- bel Prize Committee for physics made the same mist- akes. He also has circumvented some errors of Misner, Thorne and Wheeler, but he still fails to understand Einstein’s equivalence principle. Moreover, he maintains the major common errors, th...
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Authors Dr. C. Y. LoRead Journal Click Here
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Page No. 1 to 9
Unified Concepts in Cosmic, Atomic and Nuclear Physics
Published In: GJSFR Part: A: Physics & Space Science Volume: 13 Issue: 1
In this paper an attempt is made to understand the basic unified concepts of gravity, electromagnetism, nuclear charge radius, cosmic geometry; cosmic mass density, cosmic thermal energy density and cosmic red shift. The four key assumptions are : 1) Planck’s constant increases with cosmic time. 2) Being a primordial evolving black hole and angular velocity being Ht univ...
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Authors Dr. U. V. S. Seshavatharam, S. Lakshminarayana, B.V.S.T. SaiRead Journal Click Here
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Page No. 57 to 65
Combined Effect of Solar Radiation and Solar Tide Perturbations on the Spacecraft Rosetta about the Comet Wirtanen
Published In: GJSFR Part: A: Physics & Space Science Volume: 12 Issue: 8
The purpose of the present paper is twofold . First, is to give summary on Rosetta spacecraft, the first mission ever to orbit and land on a comet which is Wirtanen comet. The second, which is the most important, is to establish general computational algorithm which could be used for the motion of a spacecraft orbiting about asteroid or comet, taking due account of the combined effect of...
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Authors Dr. M. A. Sharaf, L.A.AlaqalRead Journal Click Here
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Page No. 19 to 23
Measurements of Zirconium Alloy Oxide Layers
Published In: GJSFR Part: A: Physics & Space Science Volume: 12 Issue: 8
Introduction - This is an overview of results, presented at APCOM workshops since 2001, achieved at systematic measurements on samples of oxide films on tubes of Zr1Nb, ZIRLO and Zry-4W, used for fuel cladding in light water reactors, which had been grown in the Research Institute UJP [1] at VVER conditions in water of 360°C with various times from one day up to 4 years. In a hig...
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Authors Dr. H. FrankRead Journal Click Here
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Page No. 1 to 4
Local Lorentz Invariance and the Distortion of Einstein’s Equivalence Principle
Published In: GJSFR Part: A: Physics & Space Science Volume: 12 Issue: 8
The local Lorentz symmetry says that the laws of physics are the same for all local inertial observers moving through space, regardless of their velocity and orientation. However, this notion of symmetry actually comes from the distortion of Einstein’s equivalence principle by the Wheeler School because they do not understand the essence of its physics and its mathematic...
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Authors Dr. C. Y. LoRead Journal Click Here
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Page No. 9 to 18
Temperature Dependence of Relaxation Rate in KH2PO4 above Tc
Published In: GJSFR Part: A: Physics & Space Science Volume: 13 Issue: 1
With the help of the modified four-particle cluster model Hamiltonian [GJSFR, 10, 18(2010)], the theoretical expressions for the relaxation rate of polarization fluctuation have been evaluated and discussed for the KH2PO4 (KDP)- type crystals by using the double-time thermal dependent retarded Green’s functions techniques and Dyson’s equation treatment. ...
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Authors Dr. V. S. Bist, N. S. PanwarRead Journal Click Here
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Page No. 35 to 38
Variation Characteristics of Photosynthetically Active Radition (Par) Over Ilorin in the Tropics
Published In: GJSFR Part: A: Physics & Space Science Volume: 12 Issue: 8
The annual variation of photosynthetically active radiation (PAR) measured over five (5) years period (2005- 2010) at Ilorin (80 32’N, 40 34’E) was studied. The average daily and weekly PAR were obtained and plotted. The behavior of average daily PAR is similar to that obtained for the weekly average. There is a daily and weekly fluctuation in PAR throug...
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Authors Dr. Ibrahim B.B, Usman.ARead Journal Click Here
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Page No. 5 to 8
Reference Frame and Lorentz Transformation
Published In: GJSFR Part: A: Physics & Space Science Volume: 13 Issue: 1
Generalization of an idea may lead to very interesting result. I considered in the paper the concept of reference frame in general relativity and geometry of metric- affinne manifold. Using this concept I learn few physical applications: Lorentz transformation in gravitational fields, Doppler shift. A reference frame in event space is a smooth field of orthonormal bases. Every reference ...
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Authors Dr. Aleks KleynRead Journal Click Here
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Page No. 39 to 55
Study of Noise Pollution During Pre-Carnival, Carnival and Post-Carnival Festivals in Calabar Municipality, Calabar, Cross River State, South – South Nigeria
Published In: GJSFR Part: A: Physics & Space Science Volume: 13 Issue: 1
Study of noise pollution during pre-carnival, carnival and post-carnival periods in Calabar Municipality has shown that the municipality is always highly polluted with noise from vehicles, facilities of transportation, drumming, trumpeting, shouts, knock-outs, firecrackers etc. during the carnival festival. Noise levels as high as 77.4 to 102.2 dB(A) which far exceed the 60 to 65dB(A) pe...
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Authors Dr. Aniefiok O. Akpan, Ubon E. Asuquo, Augustine A. UmohRead Journal Click Here
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Page No. 29 to 33
Appraisal of Wind Energy Potential in Zaria Metropolis
Published In: GJSFR Part: A: Physics & Space Science Volume: 13 Issue: 1
Daily wind speed and directions obtained using wind vane and anemometer for a period of ten years (1995- 2004) were acquired from meteorological station located at longitude 07 o 41′ E and latitude 11o08′ W, altitude of 686 m in Nigerian college of aviation technolog Zaria. The readings were usually taken twice in a day, at 10.00 am and at 4.00 pm. The results...
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Authors Dr. Olatunji, S, Sanusi, Y.K.Read Journal Click Here
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Page No. 19 to 27
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Effect of Relative Humidity on Oven Temperature of A Locally Design Solar Carbinet Dryer
Published In: GJSFR Part: A: Physics & Space Science Volume: 13 Issue: 1
Abstract - Among other atmospheric factors, relative humidity of the air plays an important role in the drying by solar radiation. The effect of relative humidity over oven temperature was investigated in this work. This study reveals that is a relationship between relative humidity and temperature.From the work done it has been found out that the higher the temperature the lower the rel...
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Authors Dr. Ajadi, D. A, Sanusi, Y. K.Read Journal Click Here
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Page No. 13 to 17
Role of Additives (Cd and Ge) On the Ac Conductivity and Dielectric Relaxation of Se70Te30 Glassy Alloy
Published In: GJSFR Part: A: Physics & Space Science Volume: 13 Issue: 1
The effect of additives (Cd and Ge) on a.c conductivity and dielectric properties of Se70Te30 glassy alloy at temperature range 300 K-350 K and frequency range 1 KHz-5 MHz has been studied. Experimental results indicate that the a.c conductivity and dielectric parameters are temperature, frequency and impurity dependent. The a.c conductivity in the aforesaid frequency range is found to o...
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Authors Dr. J. Sharma, S. KumarRead Journal Click Here
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Page No. 1 to 12
Past, Present and Future of the Avogadro number
Published In: GJSFR Part: A: Physics & Space Science Volume: 12 Issue: 7
The definition of Avogadro number (N ) and the current experiments to estimate it, however, both rely on the precise definition of “one gramâ€Â. Hence most of the scientists consider it as an ad-hoc number. But in reality it is not the case. In atomic and nuclear physics, atomic gravitational constant is Avogadro number times the Newton’s gravi...
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Authors Dr. U. V. S. Seshavatharam, Prof. S. LakshminarayanaRead Journal Click Here
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Page No. 27 to 37
Elastic Scattering of 28Si from Target Nuclei 27Al at Energies 70, 80, 90 and 100 Mev by Strong Absorption Model (SAM)
Published In: GJSFR Part: A: Physics & Space Science Volume: 12 Issue: 7
The differential cross-section for the elastic scattering of heavy ion 28Si from target nuclei 27Al at different projectile energies has been studied in terms of the Strong Absorption Model of Frahn and Venter[1] using the three parameters version of this model. In this paper we find that a reasonably good description to the angular distribution of the experimental elastic scattering dat...
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Authors Fahmida Sharmin, Md. Majidur RahmanRead Journal Click Here
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Page No. 25 to 30
