Physical Science International Journal <p style="text-align: justify;"><strong>Physical Science International Journal (ISSN:&nbsp;2348-0130) </strong>publishes original research articles, review articles and short communications, in all areas of Physics, Chemistry and Earth Sciences. This is a quality controlled, peer-reviewed, open access INTERNATIONAL journal.</p> en-US (Physical Science International Journal) (Physical Science International Journal) Mon, 22 Jun 2020 13:38:38 +0000 OJS 60 On a Possible Logarithmic Connection between Einstein’s Constant and the Fine-Structure Constant, in Relation to a Zero-energy Hypothesis <p>This paper brings into attention <em>a possible logarithmic connection between Einstein’s constant and the fine-structure constant</em>, based on a hypothetical electro-gravitational resistivity of vacuum: we also propose <em>a zero-energy hypothesis </em>(<strong>ZEH</strong>) which is essentially a <em>conservation principle applied on zero-energy</em> that mainly states a general quadratic equation having a pair of conjugate mass solutions for each set of coefficients, thus predicting a new type of mass “symmetry” called here “<em>mass conjugation</em>” between elementary particles (<strong>EPs</strong>) which predicts the zero/non-zero rest masses of all known/unknown EPs to be conjugated in boson-fermion pairs; ZEH proposes a general formula for all the rest masses of all EPs from Standard model, also indicating a possible bijective connection between the three types of neutrinos and the massless bosons (photon, gluon and the hypothetical graviton), between the electron/positron and the W boson and predicting two distinct types of neutral massless fermions (modelled as conjugates of the Higgs boson and Z boson respectively) which are plausible candidates for dark energy and dark matter. ZEH also offers a new interpretation of Planck length as the approximate length threshold above which the rest masses of all known elementary particles have real number values (with mass units) instead of complex/imaginary number values (as predicted by the unique quadratic equation proposed by ZEH).</p> Andrei-Lucian Drăgoi ##submission.copyrightStatement## Mon, 29 Jun 2020 00:00:00 +0000 Facilitating Physics Classroom Instruction Through the Use of Modern Electronic Device <p>The use of modern electronic devices (MED) in teaching and learning in classrooms has become imperative especially at this period of Covid-19 pandemic. This necessitated this paper which is to show the uses of Modern Electronic Device (MED) as an educational tool for impacting and prospecting in Physics Education and to highlight a few devices that can be used in the areas of Reading and Writing. Through the use of low-tech and high-tech devices, MED will be able to help students become better readers and writers. In the area of Reading, the use of MED will help students improve upon and build on their spelling abilities, and also better students’ decoding, listening, and oral skills. In the area of Writing, the use of MED will enable students to write neatly and legibly, to form letters correctly, and to write sentences that are grammatically correct. Electronic-learning tools such as internet, computers, e-mail facilities, multimedia, scanner, printer, VCD player and digital camera were discussed. The prospects of electronic learning in secondary schools were identified. The paper conclude that if teachers plan carefully and use modern electronic devices to enhance instruction throughout the school curriculum, Basic Science, reading and writing will not be the only subjects that students will benefit. It was suggested among other things that, the government should embark on computer training program for teachers. Teachers should be trained and retrained through in-service training, seminars, workshops and conferences for acquisition of the knowledge and skills needed for e-learning application in secondary schools in Nigeria. It was suggested that teachers need also to explore other avenues in their instructional curriculum where they can enhance learning through the use of MED.</p> Gabriel Odeh Ankeli ##submission.copyrightStatement## Mon, 22 Jun 2020 00:00:00 +0000 Modeling of Energy Savings Performed by a Barbecue Oven Isolated with Terracotta Bricks <p>This work is devoted to a numerical study of the energy savings achieved by an oven insulated with terracotta bricks compared to an uninsulated oven. The numerical methodology is based on the nodal method and the transfer equations were obtained by making an energy balance on each node. The equations were then discretized using an implicit scheme with finite differences and solved by the Gauss algorithm. Numerical results validated by the experiment show that the insulation of the oven with terracotta bricks considerably reduces the energy losses through the walls, but the reduction level varies according to the thickness of the bricks. The optimal thicknesses of the bricks are between 3 and 4 cm, which corresponds to energy savings of between 60 to 70% compared to the uninsulated oven. The energy saved increases the energy efficiency of the oven from 15-17% to 25-29%.</p> Gaël Lassina Sawadogo, Serge Wendsida Igo, Abdoulaye Compaore, Drissa Ouedraogo, David Namoano, Joseph Dieudonne Bathiebo ##submission.copyrightStatement## Fri, 26 Jun 2020 00:00:00 +0000 Influence of Nano Particle Size on Attenuation and Dielectric Properties of Plantain Husk Powder Using Microwave Techniques at X-Band Frequency <p>Ferrite are conventional materials used for microwave absorption, however, they are expensive, constitute health hazard and pollutes the environment. For these reasons, there is need to explore safe and environmental friendly materials that can serve as radiation absorbers and be used in fabricating microwave devices. In the light of the above, this work was geared towards exploring the use of Unripe Plantain Husk (UPH) waste material for microwave absorber applications. The usability was determined by investigating the dielectric properties and attenuation of the UPH powder with respect to particle size and frequency of operation. The nano particle of the UPH was prepared aseptically by washing in water and acetone, sliced, sundried and grinded. The grinded UPH powder was then subjected to high energy milling using a SPEX 8000D shaker for 4 hours, 8 hours, 10 hours and 12 hours. The milled powder was then prepared into pellets by suppressing with hydraulic press and mold which were then used for characterization. Results from investigation and analysis showed that the milled powder was in nano dimension using transmission electron microscope (TEM). The UPH powder sizes were in the range of 63.35 nm, 52.05 nm, 42.86 nm and 21.43 nm for the 4, 8, 10 and 12 hours milling, respectively. The dielectric constants for the as produced, 4, 8, 10 and 12 hours milled powder were 2.96, 4.97, 5.66, 6.97 and 10.36, respectively. The highest magnitude for attenuation was calculated for the 12 hours milled powder with a value of 14.92 dB and the least attenuation was calculated for the as produced powder with a value of 6.72 dB. Based on the results obtained it is concluded that nano particles of UPH powder is good for microwave attenuation and is a potential for fabricating electronic components.</p> Abubakar Yakubu, Zulkifli Abbas, Olotu Olugbenga, Suleiman Sahabi ##submission.copyrightStatement## Tue, 07 Jul 2020 00:00:00 +0000