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Zong, Shiqi, Chaoqun Jiao, Jiangong Zhang, and Zheyuan Gan. "Research on electromagnetism scattered from electricity power supply towers based on orthogonal test designs." Journal of Physics: Conference Series 2797, no. 1 (July 1, 2024): 012017. http://dx.doi.org/10.1088/1742-6596/2797/1/012017.
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Abstract For the protection of transmission towers against electromagnetism interference to peripheral radio radar stations, this paper designs orthogonal tests to investigate the electromagnetism scattered efficiency of UHV transmission towers. The towers were mathematically modeled, and the influence of three main factors, tower spacing, frequency, and number of transmitting pylons, on the electromagnetism scattered is investigated. Each factor corresponds to three levels of study and nine sets of orthogonal tests were designed to greatly simplify the number of simulations. Three-factor analysis of variance was undertaken on test data and demonstrated that frequency was the main factor affecting electromagnetic scattering, with tower spacing being the next most influential and many towers the least influential. With the main and secondary effects in mind, the combination with the most significant effect of interaction effects on electromagnetic scattering was selected as the five towers with frequency 1400 kHz and tower spacing 200 m. The investigated outcomes lay the foundation and supply instructions for multi-factor analyses of electromagnetic scattering.
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Baldwin, Ian. "Discovery of Electricity and the Electromagnetic Force: Its Importance for Environmentalists, Educators, Physicians, Politicians, and Citizens." Advances in Social Sciences Research Journal 7, no. 12 (December 25, 2020): 362–83. http://dx.doi.org/10.14738/assrj.712.9532.
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The discovery of static electricity in the 18th century and electromagnetism in the 19th was one of the most momentous scientific-technological events in human history. In the 21st century our way of life depends on the electromagnetic force so totally that were our electromagnetic infrastructure to collapse, our civilization would collapse virtually simultaneously. Despite this situation of profound dependency, few citizens understand the electromagnetic force, how it was discovered, how it works, and what wonders of modern life it controls. Nor do citizens understand the roles that Earth’s magnetosphere, ionosphere, and global electric circuit play in making electricity and life possible. Here, I review Earth’s natural electric environment and how electricity first began to be scientifically understood with the innovation of the Leyden jar in the mid-18th century; Franklin’s insights about electricity’s positive and negative poles, and its movement (later named a “current”); Galvani’s discovery of bioelectricity; and Volta’s seminal invention of the bi-metallic electrochemical battery in 1800. Ørsted’s discovery that an electric current affected a magnetized needle, causing it to swivel, in 1820 led to experiments with electromagnets by Schweigger, Arago, Ampère, Sturgeon, Henry, Faraday, and others over the course of the next decade. Observing how conducting wires induced magnetism in iron bars whenever the wires were electrified, Faraday and Henry separately discovered the principle of induction, whereby a moving magnetic field could reciprocally induce electricity in a coiled wire. Out of these momentous discoveries the “magneto-electric” telegraph was invented, and, within a single generation, the world was wired.
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Bezen, Sevim, Işıl Aykutlu, and Celal Bayrak. "An Examination of the Relationship between High School Students’ Self-efficacy Perceptions Concerning Electromagnetism and Their Academic Success." SHS Web of Conferences 48 (2018): 01049. http://dx.doi.org/10.1051/shsconf/20184801049.
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In the study, “Magnetism and Electromagnetic Induction” topic, which is part of the unit titled Electricity and Magnetism within the 11th grade Physics program that came into effect in 2013. In this study that aims to examine the relationship between high school students’ self-efficacy perceptions concerning electromagnetism and their academic success, study group consists of students who are enrolled at the 11th grade of Anatolian high schools in Ankara. Selection criterion was that students have completed covering “Magnetism and Electromagnetic Induction” topic. Within the scope of the study, answers to following questions were sought: “What is the self-efficacy level of 11th-grade students concerning electromagnetism?”, “What is the academic success levels of 11th grade students concerning electromagnetism?” and “Is there a meaningful relationship between students’ perception of self-efficacy concerning electromagnetism and their academic success?”. At the end of the study, it was revealed that students experience problems with electromagnetism, and thus they do not have a high perception of self-efficacy.
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Valenzuela, Mississippi. "General relativistic theory of gravity and electricity." Revista de Investigación de Física 25, no. 1 (April 1, 2022): 1–9. http://dx.doi.org/10.15381/rif.v25i1.14972.
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As gravitation and electromagnetism are closely analogous long-range interactions, and the current formulation of gravitation is given in terms of geometry, we expect the latter also to appear throug the geometry. We look for the formally most simple expression for the law of gravitation in the absence of an electromagnetic field, and then the most natural generalization of this law. This theory contain Maxwell theory in first approximation. In the following we outline the scheme of the general theory and then show in which sense this contains the law of the pure gravitational field and Maxwell theory.
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Qadir, Asghar, and D. P. Mason. "Sesquicentennial of the presentation by James Clerk Maxwell of his paper "A Dynamical Theory of the Electromagnetic Field" to the Royal Society of London." International Journal of Modern Physics: Conference Series 38 (January 2015): 1560070. http://dx.doi.org/10.1142/s2010194515600708.
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James Clerk Maxwell is generally regarded as the greatest contributor to the development of Physics in the time between Newton and Einstein. His most important contributions are the Kinetic Theory of Gases and Electromagnetism which is the unified theory of Electricity and Magnetism. Although his major work on Electromagnetism was published in 1865 it was read at a meeting of the Royal Society of London in 1864. The sesquicentennial of the theory correctly falls in 2014. In this article that event is celebrated. Parts of his early and professional life are described. Aspects of his many contributions are discussed but mainly we concentrate on his contributions through thermal and electromagnetic Physics.
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Wang, Juan, and Guang Li Zhou. "Technique of Digital Electro Hydraulic Automatic Control of Hydro Mechanical Transmission." Advanced Materials Research 383-390 (November 2011): 3493–98. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.3493.
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Based on a high speed electromagnetism valve and a two side throttle slide valve, a digital shift pressure regulation valve was designed. The electromagnetism valve was driven directly by the digital signal of electricity control system, the automatic shifting and the pressure’s real time regulation of shift clutch was achieved. The principle of the electricity control system was stated, based on the characteristic of the electromagnetism valve, the drive circuit was designed. The digital electro hydraulic automatic control system was installed on the heavy vehicle with hydro mechanical transmission, and tested. According to the test data of shift process, the control strategy is analyzed, and the validity and feasibility of the control system is proved.
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Khadka, Chandra Bahadur. "Extension of Maxwell’s Equations for Determination of Relativistic Electric and Magnetic Field." International Journal of Basic Sciences and Applied Computing 10, no. 1 (September 30, 2023): 1–9. http://dx.doi.org/10.35940/ijbsac.b1044.0910123.
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This paper presents the transformation of four Maxwell’s equation into relativistic electromagnetism via the partial differential equation of electric and magnetic field with respect to spatial and temporal coordinates. The relativistic form of magnetic field is developed based on Gauss’s law for magnetism and Ampere’s law while the relativistic form of electric field is developed based on Gauss’s law for electricity and Faraday’s law, where and are rest magnetic and electric field. We can easily explain theoretically about the various properties of electromagnetic waves (EM waves) with help of this relativistic formula such as; 1) Why EM waves are not deflected by electric and magnetic field as they have both oscillating electric and magnetic field? ;2) why can’t light travel faster than the speed of light? In this highly interesting topic, the particular purpose is not to enter into the merits of existing theory of relativistic electromagnetism, but rather to present a succinct and carefully reasoned account of new aspect of Maxwell’s equation which properly describe the relativistic nature of magnetic and electric Field.
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Nolan, Sam. "Electricity and Magnetism (3rd ed.) by E Purcell and D Morin." New Directions in the Teaching of Physical Sciences, no. 9 (February 12, 2016): 109. http://dx.doi.org/10.29311/ndtps.v0i9.507.
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This book is an excellent updated introduction to this classic 50 year old text for 1st and 2nd year undergraduate electromagnetism. Starting from the basic concept of electronic charge and building in neat sequential units, from electrostatics, through current and into magnetism, it provides an excellent introduction to Maxwell’s equations.
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Lobitos, Orvin A., Khenea D. Oliva, Ruffa Mae A. Doria, and Mavel Kate C. Porquillo. "Fan Mobility by Generated Electricity Harnessed from Dynamo." April-May 2024, no. 43 (April 9, 2024): 1–11. http://dx.doi.org/10.55529/jeet.43.1.11.
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Fans are the most popular products despite the broad accessibility to air conditioners and coolers. There's a chance that using air conditioners more frequently to cool indoor areas will be a major contributor to greenhouse gas emissions worldwide. Using home fans to move indoor air can increase the temperature at which air conditionin g must be turned on to keep building occupants comfortable (Malik et al, 2022). Household fans are a great way of helping improve your home feel better because they reduce interior temperature, manage humidity, and offer energy-saving advantages. Programmers begin by using the Dynamo to create robotic outputs and other electronic and programming creations. Dynamo produces direct current electric power using electromagnetism. It is also known as a generator; however, the term generator usually refers to an alternator; which produces AC (alternating current). The rotating shaft rotates electromagnets surrounded by heavy copper coils wire inside generators. This creates a magnetic field which causes the electrons of the copper wire to move away from atom to atom that generates electricity. The voltage produced by a generator depends on the number of windings magnetic force and magnetic velocity turns. There are several steps involved in creating a fan with generated electricity harnessed from Dynamo. The first is to create a program that uses Dynamo to provide instructions that are programmed on the Dynamo board to facilitate user interaction.
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Tripodi, Giulia, and Giuseppe Ruta. "Maxwell’s Early Unitary View of Electricity and Fluid Mechanics." Encyclopedia 4, no. 1 (December 22, 2023): 13–25. http://dx.doi.org/10.3390/encyclopedia4010002.
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In young Maxwell’s eyes, electricity, magnetism and fluid mechanics present analogies that let the first be mathematically grasped in a unitary way similarly to the latter. This entry sketches the first steps of James Clerk Maxwell’s unitary view of electromagnetism and fluid mechanics, with long-lasting effects on understanding the physical world. In his very first paper on the subject, Maxwell interpreted Faraday’s concept of lines of force of both electricity and magnetism as filaments of a flowing fluid. That is, Maxwell suggested to unify the previously distinct fields of electricity and magnetism, considering them as different aspects of the same entity, the ‘electromagnetic field’, which is mathematically described by four partial differential equations. In the literature there are several comprehensive works on Maxwell’s mature exposition of his theory; however, the aim of this entry contribution is rather more limited. Indeed, it is restricted to examining the contributions of Maxwell’s first paper towards developing the idea of electric current as the motion of an incompressible fluid. Thus, this entry highlights the strong connections of Maxwell’s epistemological view with the ‘mechanistic’ approach of the time to every aspect of physical phenomenology. For this purpose, this entry mentions some historical context surrounding the emergence of Maxwell’s innovative concepts.
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Kokkotas, Panos, Aikaterini Rizaki, and Katerina Malamitsa. "Storytelling as a Strategy for Understanding Concepts of Electricity and Electromagnetism." Interchange 41, no. 4 (October 2010): 379–405. http://dx.doi.org/10.1007/s10780-010-9137-9.
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Moored, Keith W. "Effect of conservation of spatial volume on electromagnetism." Physics Essays 34, no. 2 (June 27, 2021): 248–55. http://dx.doi.org/10.4006/0836-1398-34.2.248.
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This essay presents an alternate mechanism for electromagnetism and provides arguments supporting new concepts of this phenomenon. Electricity and magnetism are defined and influenced by the electric permittivity ε o and magnetic permeability μ o physical constants of the vacuum. This essay's concepts are predicated on the notion that the free-space vacuum appears to be composed of an energy field with characteristics of an elastic medium termed the “spatial energy field” or SEF. It is proposed that the geometric volume of the SEF requires conservation, and this is achieved via stretching or compression of space exhibiting wavelike qualities. The SEF, representing spacetime, has specific properties related to the emergence of an electrical field force via the Poynting vector. Magnetic field force appears to emanate from the SEF based on the Lorentz force. Space (SEF) appears to mediate energy fields, such as electrical and magnetic fields, and provides a framework for the transmission of electromagnetic waves in addition to momentum-gravitational waves. Conservation of spatial volume influences these phenomena.
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Overduin, James, Taylor Pettaway, Hannah Clark, and Mark Edmonston. "Rolling Railgun: A Lab Activity for Introductory Electromagnetism." Physics Educator 02, no. 04 (December 2020): 2050017. http://dx.doi.org/10.1142/s2661339520500171.
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We describe a laboratory exercise for an introductory calculus-based electricity and magnetism course in which students construct and study the performance of a “rolling railgun” formed by two small coin magnets connected by a ferromagnetic axle which carries current from one rail to the other. This exercise can be scaled up from a simple, mostly qualitative activity to a more comprehensive comparison between theory and experiment that will challenge students’ calculus skills. The required components are small and inexpensive enough to mail to students who are taking the course remotely. We report on our initial success in incorporating this lab into our curriculum at Towson University.
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Al-Khalili, Jim. "The birth of the electric machines: a commentary on Faraday (1832) ‘Experimental researches in electricity’." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 373, no. 2039 (April 13, 2015): 20140208. http://dx.doi.org/10.1098/rsta.2014.0208.
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The history of science is filled with examples of key discoveries and breakthroughs that have been published as landmark texts or journal papers, and to which one can trace the origins of whole disciplines. Such paradigm-shifting publications include Copernicus' De revolutionibus orbium coelestium (1543), Isaac Newton's Philosophiæ Naturalis Principia Mathematica (1687) and Albert Einstein's papers on relativity (1905 and 1915). Michael Faraday's 1832 paper on electromagnetic induction sits proudly among these works and in a sense can be regarded as having an almost immediate effect in transforming our world in a very real sense more than any of the others listed. Here we review the status of the subject—the relationship between magnetism and electricity both before and after Faraday's paper and delve into the details of the key experiments he carried out at the Royal Institution outlining clearly how he discovered the process of electromagnetic induction, whereby an electric current could be induced to flow through a conductor that experiences a changing magnetic field. His ideas would not only enable Maxwell's later development of his theory of classical electromagnetism, but would directly lead to the development of the electric dynamo and electric motor, two technological advances that are the very foundations of the modern world. This commentary was written to celebrate the 350th anniversary of the journal Philosophical Transactions of the Royal Society .
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Hall, Dewey W. "Wordsworth and Emerson: Aurora Borealis and the Question of Influence." Articles, no. 50 (June 5, 2008): 0. http://dx.doi.org/10.7202/018146ar.
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Abstract This article concerns the question of influence evident in the transatlantic relationship between William Wordsworth and Ralph Waldo Emerson. I argue that influence is linked vitally to light—celestial or the northern lights (i.e. aurora borealis)—, which is evident in the prose and poetry by Wordsworth and Emerson. Electromagnetic energy conducts a circuit; this is reflected also in the transatlantic crosscurrent of the precursor and progeny. Notably, Wordsworth’s “The Complaint of a Forsaken Indian Woman” (1798) and his Preface to Lyrical Ballads (1802) influence Emerson’s The Poet (1844), which has been informed also by Michael Faraday’s Experimental Researches in Electricity (1839). The matter pertaining to influence is inextricably connected to electromagnetism, light, and aurora borealis that appear in the work by Wordsworth and Emerson. Inspiration, then, ultimately can be derived from a celestial source in relation to the terrestrial.
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E Silva, Letícia Tamara Cunha, Edson Peixoto De Oliveira, Ruan Moreira De Souza, and Arilson Paganotti. "The teaching electromagnetism using digital technologies." OBSERVATÓRIO DE LA ECONOMÍA LATINOAMERICANA 22, no. 2 (February 8, 2024): e3142. http://dx.doi.org/10.55905/oelv22n2-046.
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The Physics of Electromagnetism began in ancient Greece and after centuries the studies of Electricity and Magnetism became unified. Although Electromagnetism is present in the curricular components of Brazilian education and in the daily lives of students, the difficulties that students have in assimilating the basic concepts related to this topic are notable. In this context, a didactic and practical mini-course was proposed where Digital Information and Communication Technologies (DICT) were used, conveniently to teach students some concepts of Electromagnetism. During the activity, two questionnaires were administered, one before the mini-course and the other after it. The first composed of seven questions (objective and discursive) aimed to obtain students' prior knowledge in relation to Electromagnetism. The second questionnaire consisted of four questions, three of which were paired with questions from the first questionnaire. It was applied with the aim of evaluating whether the mini-course carried out favored student learning, thus revealing possible signs of significant learning. The post-questionnaire also presented a discursive question that asked students' opinions about the mini-course developed based on DICT. This research can be characterized as qualitative and quantitative and from the data analysis, it was noticed that the activities developed with high school students favored their learning as observed in the best results revealed in the post-questionnaire. It is concluded that the use of DICT should be encouraged in schools, as they constitute tools that alleviate difficulties and help students learn.
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Mahfoud, Jarir, Yan Skladanek, and Johan Der Hagopian. "Active Control and Energy Cost Assessment of a Rotating Machine." Shock and Vibration 18, no. 4 (2011): 613–25. http://dx.doi.org/10.1155/2011/924372.
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The performances for controlling a rotating machine by using either an Electromagnetic Actuator or a Piezoelectric Actuator are compared in this work. The aim is to establish selection criteria based on environmental impact. Life Cycle Analysis shows that the operating stage has a considerable impact. In this study, only the operating stage is considered. The energy consumed by the actuators seems to be the appropriate indicator for the same "mechanical" performances. Numerical studies are carried out in order to quantify the energy consumed in each case. Modal control strategy with a fuzzy controller is used. The controller inputs are displacements and velocities. The system studied is modeled by using finite element method and the electrical circuit of each actuator is modeled by using basic electricity and electromagnetism theories. Several configurations are assessed and defined by using the chosen Functional Unit.The results obtained show that both controllers are efficient and enable recommendations for optimal control procedures design for the energy consumed.
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Calles-Arriaga, Carlos A., Juan López-Hernández, Martín Hernández-Ordoñez, Marco A. Nuño-Maganda, Manuel B. Ortiz-Moctezuma, and Enrique Rocha-Rangel. "Magnetic field computer interface based on Cartesian robot for practical demonstration of Ampere’s law in precollege courses." Physics Education 57, no. 6 (August 8, 2022): 065002. http://dx.doi.org/10.1088/1361-6552/ac8518.
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Abstract Basic science courses, such as physics, are fundamental to precollege studies. For instance, in different engineering applications, electricity and magnetism require comprehending subjects such as electrical circuits and power electronics. However, abstract concepts such as electric or magnetic fields are often difficult to explain without visual tools. Computer programs designed for learning physics fundamentals are useful in this area because they allow the visualization, interaction and reinforcement of main concepts in a better way than using only blackboard. In this work, an interactive MATLAB based program to visualize a magnetic field in 3D was presented. The measurements were sampled by a computer-controlled Cartesian robot with a Hall effect sensor. The magnetic field was generated by an energized electromagnet to show the relationship between electricity and magnetism. The designed graphical user interface aims to stimulate interest in electromagnetism in precollege students.
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Moored, Keith W. "Conservation of spatial volume and the emergence of gravity and electromagnetism." Physics Essays 35, no. 2 (June 25, 2022): 100–110. http://dx.doi.org/10.4006/0836-1398-35.2.100.
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The universe is a structured, logical system obeying many natural laws. This essay proposes an additional law termed the conservation of spatial volume. This refers to spacetime’s ability to be displaced, compressed, expanded, and stretched to conserve geometric volume. In addition, space appears to possess Cauchy-like elasticity characteristics measured by the gravitational constant G. It is postulated that space has qualities of an energy density field, which is termed the “spatial energy field” or SEF in this essay. The SEF in all of its parts is a metric of energy field curvature tensors assigned to every coordinate in spacetime. It is proposed that space resists volume displacement by mass and reacts with a counter-force equal to the object’s inertia mass. This is because the compression of space from the displacement of mass creates a gravitational field. The gravitational field represents an increase in spatial density surrounding the object. An increase in spatial density is measured by the change in permittivity ε, permeability μ, and refractive index n, physical parameters of the vacuum. Thus, gravity would be considered an emergent response of spacetime attempting to conserve its volume by the reciprocal curvature force of space. In regard to electromagnetism, electric and magnetic fields are geometric in origin and, therefore, part of spacetime. It is proposed that spacetime has specific properties related to the emergence of electrical fields via the Poynting vector. This is influenced by electric permittivity εo. Magnetic fields appear to emanate from space based on the Lorentz force. This is influenced by magnetic permeability μo. Both the Poynting vector energy flow and the corresponding Lorentz force are the reaction of space counteracting forces of electricity and magnetism while conserving spatial volume. It appears that electromagnetism could be considered a twisting torsion of spacetime. Space appears to mediate electrical and magnetic fields; it provides a framework for transmitting electromagnetic waves as well as momentum-gravitational waves. Gravity and electromagnetism are related, emerging from a common origin, which appears to be the energy of spacetime itself.
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Soto-Vergel, A. J., B. Medina-Delgado, and W. Palacios-Alvarado. "Teaching the concept of the uniform plane wave from mathematical modeling." Journal of Physics: Conference Series 2073, no. 1 (October 1, 2021): 012019. http://dx.doi.org/10.1088/1742-6596/2073/1/012019.
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Abstract The discovery of electromagnetic waves enabled us to understand electricity, magnetism, and optics under the same field; therefore, it is important for electronic and related engineers to understand the concept of the uniform plane wave, which represents the simplest case of an electromagnetic wave propagating through a medium. However, this concept is taught with a theoretical approach, shows a need for a methodological change towards experimentation to mitigate poor learning in students causing a high failure rate in electromagnetism courses. In this context, this work presents a methodological alternative for teaching the concept of the uniform plane wave, combining the CUVIMA model with the didactics of mathematical modelling, to link experimentation and provide cognitive support to the conceptualization of the physical phenomenon. For it, a single-group design is implemented, with pre-test and post-test, to know about previous ideas and identify the conceptual change achieved for the students. When applying the Student’s t-test at a significance level of 5%, a significant difference is evident between the means of the study groups. It is concluded that there is a favorable and representative conceptual change in the students, with respect to the understanding of the physical phenomenon represented by the concept of the uniform plane wave.
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Wu, Kai Jun, and Yan Yan Wang. "Design and Simulation of Variable Speed Constant Frequency Brushless Doubly Fed Wind Power Generator." Advanced Materials Research 383-390 (November 2011): 537–42. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.537.
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Brushless Doubly-fed Machine (BDFM) is a new inverter-driven induction motor, and it has broad prospects in wind power generation. This paper analyses the structure and VSCF electricity generating principle of a cascade Brushless Doubly fed Wind Power Generator, deduces the BDFG’s mathematical model, The variable structure control (VSC) was used to the active and reactive power decoupling control of the BDFM, analysis the relation of electromagnetism and energy balance .Finally, simulation and analysis of the whole system and control strategy are carried through in matlab/simulink soft. According to these results, the correct of parameters and simulation model for BDFM is proved.
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Carter, Christopher. ""The sea fryseth not": science and the open polar sea in the nineteenth century." Earth Sciences History 32, no. 2 (January 1, 2013): 235–351. http://dx.doi.org/10.17704/eshi.32.2.p4808m837636388x.
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While generally dismissed by historians as a romantic fantasy, the theory of an open polar sea fit into the context of a more unified view of the natural world developed in the early nineteenth century and exemplified by romantic philosophical ideas. Oersted's discovery of electromagnetism encouraged research into the possible connections between electricity, magnetism, heat and light. At the same time, there was renewed interest in geomagnetism inspired by Hansteen's revival of the four-pole theory of the Earth's magnetic field. Incorporating these works into a new theory of climate created a space for an ice-free Arctic by allowing a milder climate in the high latitudes. This attempt to fuse the study of meteorology and geomagnetism reinforced existing beliefs in an open polar sea and placed this sailor's dream into a holistic worldview that joined different natural phenomena in an effort to find one unifying principle behind all of nature.
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Bykova, Valentina Prokhorovna. "Professional orientation of engineering specialties within special course in physics." Vestnik of Astrakhan State Technical University. Series: Marine engineering and technologies 2023, no. 3 (August 31, 2023): 114–24. http://dx.doi.org/10.24143/2073-1574-2023-3-114-124.
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The article highlights the peculiarities of teaching physics to the students of Astrakhan Technical University during a special course “Operation of marine electrical equipment and means of automatics” within the framework of technical creativity workshop “Applied physics” organized under the Department of Physics. The given special course can promote realization of a variative part of the direction, according to the curriculum. The content of the special course meets didactic principles: integration, continuity and succession of training, fundamentality and professional orientation of interdisciplinary links. It was theoretically proved that such content is most fully satisfied by the special course on physics “Bases of electromagnetism and electromagnetic compatibility elements” based on integration of physical theories with technical ones in the frame of the elective disciplines “Bases of electromagnetic compatibility” which helps to form professional orientation of knowledge and abilities on physics. There is examined a theoretical component of the special course and particular tasks and solutions are given: practical problem connected with professional activity of the future specialist; the research problem, allowing to predict the expected result and to learn how to conduct the research work; the creative problem satisfying the conditions of industrial teaching. Diagrams of a DC electric circuit, a graph of dynamic loops of remagnetization of a coil, illustrations of the block “Properties of gases”, the laboratory complex “Electricity and Magnetism”, a block of generators, a diagram and model of the Brovin Kacher device, as well as its components are given as part of the exemplary tasks for students. The experience of non-contact energy transfer is illustrated. Conclusions are drawn about the practical significance of the special course in the framework of the work of the workshop of technical creativity at the Department of Physics of Astrakhan State Technical University.
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Gómez Díaz, Kenia Yadira Gómez, Susana Estefany De León De León Aldaco, Jesus Aguayo Aguayo Alquicira, Mario Ponce-Silva, and Víctor Hugo Olivares Olivares Peregrino. "Teaching–Learning-Based Optimization Algorithm Applied in Electronic Engineering: A Survey." Electronics 11, no. 21 (October 25, 2022): 3451. http://dx.doi.org/10.3390/electronics11213451.
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This paper presents a survey of the articles published in the period 2013–2021 related to the application of the teaching–learning-based optimization (TLBO), which reproduces the dynamics that occur in a classroom with the teacher and the student. This paper uses the algorithm to optimize some objective functions related to the design in the electronics field. A total of 62 papers were reviewed and some graphs were generated to summarize the most relevant of these articles. These have been classified into five categories based on the areas of electronic engineering, such as power electronics, control, electromagnetism, digital electronics, and analogue electronics. Electronic engineering has been becoming increasingly relevant in world technological development, for example, in electric vehicles or generating electricity from renewable energy sources to counteract the environmental impact that non-renewable sources generate. The TLBO algorithm has attracted the interest of a large number of researchers due to its efficiency, speed, and low initialization parameter requirements. This article is composed of two stages, the first is a summary of the information on electronics, in general, encompassing all its areas, and the second focuses on the algorithm applied to multilevel inverters; for each stage, graphs and tables are shown.
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Li, Huawang. "Using three elementary particles to construct the physical world." Physics Essays 34, no. 2 (June 27, 2021): 236–47. http://dx.doi.org/10.4006/0836-1398-34.2.236.
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In this paper, we conjecture that gravitation, electromagnetism, and strong nuclear interactions are all produced by particle collisions by determining the essential concept of force in physics (that is, the magnitude of change in momentum per unit time for a group of particles traveling in one direction), and further speculate the existence of a new particle, Yizi. The average kinetic energy of Yizi is considered to be equal to Planck’s constant, so the mass of Yizi is calculated to be <mml:math display="inline"> <mml:mrow> <mml:mn>7.37</mml:mn> <mml:mo>×</mml:mo> <mml:msup> <mml:mrow> <mml:mn>10</mml:mn> </mml:mrow> <mml:mrow> <mml:mo>−</mml:mo> <mml:mn>51</mml:mn> </mml:mrow> </mml:msup> </mml:mrow> </mml:math> kg and the average velocity of Yizi is <mml:math display="inline"> <mml:mrow> <mml:mn>4.24</mml:mn> <mml:mo>×</mml:mo> <mml:msup> <mml:mrow> <mml:mn>10</mml:mn> </mml:mrow> <mml:mn>8</mml:mn> </mml:msup> </mml:mrow> </mml:math> m/s. The universe is filled with Yizi gas, the number density of Yizi can reach <mml:math display="inline"> <mml:mrow> <mml:mn>1.61</mml:mn> <mml:mo>×</mml:mo> <mml:msup> <mml:mrow> <mml:mn>10</mml:mn> </mml:mrow> <mml:mrow> <mml:mn>64</mml:mn> </mml:mrow> </mml:msup> </mml:mrow> </mml:math> /m3, and Yizi has no charge. After abandoning the idealism of physics, I try to construct a physical framework from three elementary particles: Protons, electrons, and Yizis. (The elementary particles mentioned here generally refer to the indivisible particles that constitute objects.) The effects of Yizi on the conversion of light, electricity, magnetism, mass, and energy as well as the strong nuclear and electromagnetic forces are emphasized. The gravitation of electromagnetic waves is measured using a Cavendish torsion balance. It is shown experimentally that electromagnetic waves not only produce pressure (repulsion) but also gravitational forces upon objects. The universe is a combination of three fundamental particles. Motion is eternal and follows the laws of conservation of energy and momentum. There is only one force: The magnitude of change in momentum per unit time for a group of particles traveling in one direction. Furthermore, this corresponds to the magnitude of the force that the group of particles exerts in that direction. From this perspective, all physical phenomena are relatively easy to explain.
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Karwasz, Grzegorz P., Krzysztof Służewski, and Anna Kamińska. "CONSTRUCTIVISTIC PATHS IN TEACHING PHYSICS: FROM INTERACTIVE EXPERIMENTS TO STEP-BY-STEP TEXTBOOKS." Problems of Education in the 21st Century 64, no. 1 (April 25, 2015): 6–23. http://dx.doi.org/10.33225/pec/15.64.06.
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Teaching Physics, in-between theory and technical applications is nowadays a tedious task. Apparent abundance of web resources makes access to information easy, but its use by pupils is quite unclear. These difficulties, added to less importance held by physics nowadays than in the last decades, inside the national educative system, caused in many countries a fall of interest in studying science and technology. Within several national and international programs, involving mainly Poland and Italy, various recipes for school education at lower and higher secondary level were developed in our group. All these recipes were oriented towards real experiments and constructing the discovery paths with pupils. The school (and extra-scholastic activities for primary-age pupils) included: collections of simple experiments “Physics and Toys”, interactive lectures for children, itinerary exhibitions, innovative textbooks inviting the reader to a heuristic dialog, computer-guided experiments, and collections of problems in physic solved step-by-step. We resume some of these implementations and draw main results. Actions were undertaken with three cultural goals: trigger a wide interest in physics through “Fun in Physics” activities, improve didactical efficiency at schools, induce students’ initiative in an independent discovery of science. In detail, for a lower secondary school simple interactive experiments on electromagnetism were introduced, and a textbook on mechanics. For higher secondary schools – a textbook on modern physics and computer-guided experiments; for children aged 5-10 – interactive lectures on mechanics, electricity, acoustics. Evaluations were performed by qualitative and quantitative measures, in Poland and Italy, in collaboration with several teachers and PhD students. All these, constructivist applications show an improved efficiency and find positive evaluations among teachers and pupils. However, partial and sporadic actions do not lead to significant results. Only conjugated implementations of new experimental tools (real objects) and didactical methods (inquiry-based teaching) shows achievements congruent with the Lisbon EU declaration on Knowledge-based Societies (EU Commission White Paper: Education and Training, 1995). Key words: educational systems, teaching physics, interactive exhibitions, simple experiments, computer-guided laboratories, constructivism, cognitive sciences.
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Kostin, Mykola, Tetiana Mishchenko, and Oksana Hoholyuk. "The principle of creating a "smart" electricity meter in electric traction networks with stochastic electromagnetic processes." Computational Problems of Electrical Engineering 11, no. 1 (April 25, 2021): 12–19. http://dx.doi.org/10.23939/jcpee2021.01.012.
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Voltage and current are sharply variable random (stochastic) processes in traction networks of DC electric transport systems. As a result, electronic and hybrid electricity meters used in electric systems measure electric power with a large relative error that significantly exceeds that of their accuracy class. In this paper the principle of developing smart meters for accounting the electricity transmitted from traction substations to electric rolling stock through a traction network is proposed. Proposed ideas are developed on the basis of the random processes correlation theory. The meter operates in real time and monitors not a set of realizations of random voltage and current processes, but their deterministic characteristics, that is, time functions of mathematical expectations and variances which make up the background of its operating principle. The experimental implementation of the proposed principle has been conducted in the feeder zone of an A-B section of the GisDnieper Railway of Ukraine, where registration and processing of realizations of stochastic voltage and current processes obtained in real operation mode has been done. The ratios obtained for active and reactive power can be applied not only for traction power grids, but also for electric networks of external power supply of DC electric traction systems as the basis for the “smart meter” design.
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Apollonskiy, Stanislav Mikhaylovich. "Problems of electromagnetic compatibility in electricity of rail system." Transportation systems and technology 1, no. 2 (December 15, 2015): 110–26. http://dx.doi.org/10.17816/transsyst201512110-126.
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Problems of electromagnetic compatibility on electrified railways are sharper than in the stationary energy sector. This is due to the following circumstances: 1. Electrified railways has considerable length in space and is usually located in different climatic and in geological zones. 2. In rail transport, as well as any other transport systems, a compact high-performance equipment used (high and low voltage), to a greater degree of exposure to external electromagnetic influences than in the stationary energy sector. 3. All processes (stationary and non-stationary) on an electrified rail, in one way or another, affect the operation of each of the elements of the system. 4. In the development of an extensive electrified railway is necessary to ensure the electromagnetic compatibility of each of the elements that are not always required in the stationary energy sector. 5. Problems of electromagnetic compatibility electrified railways significantly of more complicated, when are using magnetolevitatsionnyh technologies for elektrozhdvizhenie. Considered the problems of electromagnetic compatibility in electricity of rail system, are discussed ways of solving them.
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Rohalin, Serhii. "METHODS OF IMPLEMENTATION OF EXPERT STUDIES OF ELECTRICITY MEASURING DEVICES EXPOSED TO THE IMPACT OF RADIO-FREQUENCY ELECTROMAGNETIC RADIATION." Criminalistics and Forensics, no. 67 (August 9, 2022): 493–507. http://dx.doi.org/10.33994/kndise.2022.67.50.
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Investigation of the influence of electromagnetic radiation on the operation of electronic metering devices for electricity is one of the demanded areas of forensic electrical engineering expertise. However, the scientific and practical study of this area of forensic research does not coincide with modern requirements. The study of the influence of electromagnetic radiation of the radio frequency range on the operation of electronic metering devices for electricity, as well as the identification of such radiation as accidental or intentionally created for the purpose of unaccounted consumption of electricity, are relevant. The article systematizes the requirements established by regulatory documents for the stability of the operation of metering devices for electricity when exposed to radiofrequency electromagnetic radiation. The mechanism of the influence of radiofrequency electromagnetic radiation on electric energy metering devices and the constructive elements of metering devices sensitive to the effects of such radiation is determined. A list of the necessary initial data for conducting forensic examinations on the determination of the impact of radiofrequency electromagnetic radiation on the investigated metering device and the tasks of identifying radiofrequency radiation devices as an effect is indicated. Conditions are determined under which the conclusion about interference in the operation of the metering device for the purpose of unaccounted electricity consumption may be categorical. Recommendations have been developed to determine the source of radiofrequency radiation as probable in cases where the source is not provided for instrumental research in expert proceedings to study the interference in the operation of the metering device. A methodology has been developed for conducting forensic examinations on the issues of determining the existence of the impact of radiofrequency electromagnetic radiation on the investigated metering device for the purpose of unaccounted consumption of electrical energy and the tasks of identifying radiofrequency radiation devices as sources of influence. The developed methodology is recommended for use in forensic practice according to the stages of the study, together with the provisions and generalizations set out in the article. Key words: electric energy metering device, interference in the operation of the metering device, electromagnetic radiation, radiation frequency, electric field, electric field strength, electromagnetic field, Umov-Poynting vector, radiation power, classes of electromagnetic environment.
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C, Ramesh kumar. "Fabrication of Electromagnetic Suspension System." International Journal of Innovative Research in Advanced Engineering 10, no. 07 (July 31, 2023): 581–84. http://dx.doi.org/10.26562/ijirae.2023.v1007.24.
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The power generator electromagnetic suspension system is a system that converts vehicle bump generated linear motion & vibration, into electricity to be used in battery charging. General vehicle shock absorbers are used to simply absorb this energy without converting it to electricity. So here we put forth a way to use this free energy and store it for further needs such as vehicle lights, cooling, indicator lights etc. The devised prototype Suspension System uses the energy to generate electricity which is otherwise dissipated. In this work, process of arriving at the fabricated model of Suspension System for Power Generation is elaborated. The preliminary and existing techniques which help in regenerating energy dissipation in suspensions are discussed and the way they led to contrive the concept of prototype Suspension System is elucidated. With the concept, the derivation of specifications and the process of designing the Suspension System is delineated. The Suspension System generated a potential difference in the range of 125 mV to 350 mV.
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Rohalin, S., І. Bohdaniuk, and A. Lâsâi. "Features of performing expert researches on electricity meters that have been exposed to radiofrequency electromagnetic radiation." Theory and Practice of Forensic Science and Criminalistics 23, no. 1 (July 27, 2021): 270–89. http://dx.doi.org/10.32353/khrife.1.2021.21.
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The normative requirements for the stability of electricity meters to the in-fluence of radiofrequency electromagnetic radiation on them were systematized.
The mechanism of influence of radiofrequency electromagnetic radiation was outlined and the constructive elements of metering devices, sensitive to the ac-tion of such radiation, were determined. The division of constructive execution of electricity meters into groups according to the signs of protection against the specified influence is executed. Based on the division of the electricity meters into groups, the list of initial data required for such researches, was determined; re commendations for the researches of the effect of radiofrequency electromag-netic radiation on the studied meter are developed.
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Serdyuk, T. M., and M. S. Serchenko. "Analysis Of Power Quality Parameters and Devices for Their Measurement." Science and Transport Progress, no. 3(103) (September 29, 2023): 13–23. http://dx.doi.org/10.15802/stp2023/296329.
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Purpose. The main objective of this study is to assess the phenomena that affect the parameters of power quality, to consider ways to counteract the deterioration of power quality, to assess the effect of electromagnetic interference on the human body, and to review the available devices for measuring the parameters of electric energy. Methodology. To obtain relevant data, the authors conducted a literature review on the topic of the work using full-text and abstract databases. The main causes of electromagnetic compatibility (EMC) violations and ways to counteract these violations are considered. The main parameters of electricity quality, conditions for their measurement and permissible ranges according to the State Standards of Ukraine (SSU) are highlighted. A review of devices for measuring the parameters of electricity quality and the search for a suitable one that meets Ukrainian standards was carried out. Findings. The authors have proved: 1) the problem of measuring electricity quality parameters is relevant and important for its accurate accounting; 2) control of electricity quality parameters and compliance with state standards allows avoiding negative impact on the electricity supply system; 3) the use of modern digital measuring devices provides greater measurement accuracy than analog ones, and they are able to take into account more parameters in one measurement. Originality. The authors conducted a study in the field of electromagnetic compatibility in the field of electromagnetic compatibility using a digital device that gives more accurate and reliable results of power quality parameters. Practical value. Based on the results obtained, it is possible both to correct the personal research of individual scientists or teams of scientists and to predict further prospects for the development of the subject area «Electromagnetic Compatibility» in traction power supply systems in railway transport. The research can also be useful in the study of the disciplines «Electromagnetic Compatibility of Railway Automation Systems» and «Electrical Circuits and Lines of Railway Automation», organization of scientific and practical seminars, advanced training courses, etc.
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Torkaman, Fariba Momeni Torkaman, and Farzaneh Momeni. "Positive and negative effects of electricity on human health." Journal of Biological Studies 6, no. 1 (May 10, 2023): 193–203. http://dx.doi.org/10.62400/jbs.v6i1.7781.
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The human cells are electrical units and therefore are so sensitive to the electrical fields. More recent investigation has shown that the human cells have the ability to change direction as much by as 180° in response to electrical fields, according to which, positive or negative impact of electricity on human life have been argued in a number of studies. In vitro and in in vivo studies and clinical observations have shown that natural and artificial electric/electromagnetic fields may affect negatively or positively on human health. In one hand, the positive effects of electrical fields have been reported in tissue regeneration, wound healing, cancer treatment, controlling the infection, and etc.; on the other hand, negative impact of electricity has been demonstrated on human health. It has been reported that electric/electromagnetic fields may have a significant role in cancer development. This review article aims to investigate the positive and negative impact of electric/electromagnetic fields on human health and life.
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Liang, Qixiong. "Analysis of Electromagnetic Interference Reduction from Printed Circuit Boards." Highlights in Science, Engineering and Technology 27 (December 27, 2022): 33–37. http://dx.doi.org/10.54097/hset.v27i.3718.
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Nowadays, electricity is the most important and necessary energy in human society and daily life, because electricity is convenient and safe to transfer between different locations. However, electromagnetic interference (EMI) always accompanies electricity and has brought a lot of problems. Especially in printed circuit boards (PCB), the EMI can break the circuit or cause a short circuit, which is dangerous in creating a PCB. To effectively reduce EMI from PCB, three different methods of reducing EMI from PCB were chosen to compare with each other. By comparing their price, practicability, effectiveness, data, and technology for reducing EMI from PCB, PCB designers can choose the methods that are suitable for their situation.
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KATSURAI, Makoto. "Challenge from Physics of Electricity to Electromagnetic Theory." Journal of The Institute of Electrical Engineers of Japan 140, no. 10 (October 1, 2020): 664–67. http://dx.doi.org/10.1541/ieejjournal.140.664.
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Kramer, David. "US electricity grid still vulnerable to electromagnetic pulses." Physics Today 62, no. 9 (September 2009): 24–25. http://dx.doi.org/10.1063/1.3226706.
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Shen, Baifei, Xueyan Zhao, Longqing Yi, Wei Yu, and Zhizhan Xu. "Inertial confinement fusion driven by long wavelength electromagnetic pulses." High Power Laser Science and Engineering 1, no. 3-4 (December 20, 2013): 105–9. http://dx.doi.org/10.1017/hpl.2013.19.
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AbstractA method for inertial confinement fusion driven by powerful long wavelength electromagnetic pulses (EMPs), such as ${\rm CO}_{2}$ laser pulses or high power microwave pulses, is proposed. Due to the high efficiency of generating such long wavelength electromagnetic pulses, this method is especially important for the future fusion electricity power Special fuel targets are designed to overcome the shortcomings of the long wavelength electromagnetic pulses.
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Борисова, Ольга, Ol'ga Borisova, В. Хромушин, V. Hromushin, Александр Хадарцев, and Aleksandr Hadarcev. "ECOLOGICAL AND BIOLOGICAL EFFECTS OF ELECTROMAGNETIC RADIATION RADIATIONS." Clinical Medicine and Pharmacology 5, no. 3 (October 30, 2019): 45–50. http://dx.doi.org/10.12737/article_5db94d5fdbee68.15390439.
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Mankind has come to a peculiar and very important interaction with the environment. To the existing electricity and magnetic fields of the Earth, atmospheric electricity, radio emissions of the Sun and the Galaxy, electromagnetic radiation (EMR) of artificial origin was added. Biologically significant are the 50 Hz electric fields generated by overhead lines and substations. Genetic effects of EMR in Biosystems are established: induction of various genetic disorders at one modes of influence and modification of gene expression at others.
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Boumous, Samira, Nacereddine Guettaf, Amina Hamel, Ilham Lariche, and Hamou Nouri. "Effect on Human Body of the Magnetic Field Induced by the High Voltage Transmission Line." European Journal of Electrical Engineering 23, no. 2 (April 23, 2021): 149–55. http://dx.doi.org/10.18280/ejee.230209.
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The quality of electrical energy and the fight against energy losses are a crucial issue for electricity companies. The use of high voltage lines can limit energy losses for the transmission of electricity over long distances. But this solution has the disadvantage of the propagation of the electromagnetic wave which has a great influence on human health. The work presented in this study mainly deals with modelling problems that may be encountered by the community working in the field of low frequency electromagnetic fields. In order to model a power line, we are based on geometric data as well as phase and earth conductor data.
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Anies, Anies, Dwi P. Sasongko, and Retno Setyowati. "Electromagnetic Fields Exposure From Extra High Voltage Transmission On Public Health: A Case-Control Study in Three Districts In Central Java." Global Journal of Health Science 10, no. 9 (August 11, 2018): 54. http://dx.doi.org/10.5539/gjhs.v10n9p54.
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This study is to prove the effect of electromagnetic field exposure from 500 kV Extra High Voltage Transmission to the incidence of electrical sensitivity and the extent of the risk of electrical sensitivity incidence on the population residing in areas/in the proximity of 500 kV transmission facilities compared to residents who do not live under it. The study design employed is the case-control observational analytic epidemiology, and qualitative study, with 249 samples, consisted of 83 cases and 166 controls. The study was conducted in Pekalongan municipality, Pemalang municipality and Tegal municipality, all in Central Java. The results show that there are some effects of the electromagnetic field 500 kV electricity transmission exposure with the incidence of electrical sensitivity. Moreover, the electrical sensitivity incidence on the residents living under 500 kV electricity transmission is 5.8 times compared to those who do not live under 500 kV electricity transmission.
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Halmare, Mr Abhay, Shreya Damodhar Zade, Simran Ramkrushna Parchake, and Ritesh Siddharth Borkar. "Power Genration Using By Peltier Module." International Journal for Research in Applied Science and Engineering Technology 10, no. 4 (April 30, 2022): 2099–101. http://dx.doi.org/10.22214/ijraset.2022.41392.
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Abstract: Purpose of making this project is to generate electrical energy from bad materials cow dung , dry paddy fields, dry leaf and bad stuff etc. and store that electrical energy in the battery through the circuit and use that electrical energy to operate the whole project. And the LED bulb is shown to be turned on and the use of filters to control pollution from energy production .So in this our Project we show successfully How to generate electricity by Waste Materials And Store electricity in Battery successfully. The main aim behind this project is to reduce the pollution, and recycle the wastage and reuse them and finally to produce the electricity from waste. Energy harvesting is the main focus of the researchers all over the world. It is because of deployment of million sensor nodes and bottleneck of battery. This method avails various methods like piezoelectric, electromagnetic, solar and thermoelectric. Keywords: LED (Light emitting diode), Electromagnetic, Thermoelectric, Voltage, Sag, Piezoelectric, Power Quality
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Halmare, Mr Abhay, Shreya Damodhar Zade, Simran Ramkrushna Parchake, and Ritesh Siddharth Borkar. "Power Genration Using By Peltier Module." International Journal for Research in Applied Science and Engineering Technology 10, no. 4 (April 30, 2022): 2099–101. http://dx.doi.org/10.22214/ijraset.2022.41392.
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Abstract: Purpose of making this project is to generate electrical energy from bad materials cow dung , dry paddy fields, dry leaf and bad stuff etc. and store that electrical energy in the battery through the circuit and use that electrical energy to operate the whole project. And the LED bulb is shown to be turned on and the use of filters to control pollution from energy production .So in this our Project we show successfully How to generate electricity by Waste Materials And Store electricity in Battery successfully. The main aim behind this project is to reduce the pollution, and recycle the wastage and reuse them and finally to produce the electricity from waste. Energy harvesting is the main focus of the researchers all over the world. It is because of deployment of million sensor nodes and bottleneck of battery. This method avails various methods like piezoelectric, electromagnetic, solar and thermoelectric. Keywords: LED (Light emitting diode), Electromagnetic, Thermoelectric, Voltage, Sag, Piezoelectric, Power Quality
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Halmare, Mr Abhay, Shreya Damodhar Zade, Simran Ramkrushna Parchake, and Ritesh Siddharth Borkar. "Power Genration Using By Peltier Module." International Journal for Research in Applied Science and Engineering Technology 10, no. 4 (April 30, 2022): 2099–101. http://dx.doi.org/10.22214/ijraset.2022.41392.
Full textAbstract:
Abstract: Purpose of making this project is to generate electrical energy from bad materials cow dung , dry paddy fields, dry leaf and bad stuff etc. and store that electrical energy in the battery through the circuit and use that electrical energy to operate the whole project. And the LED bulb is shown to be turned on and the use of filters to control pollution from energy production .So in this our Project we show successfully How to generate electricity by Waste Materials And Store electricity in Battery successfully. The main aim behind this project is to reduce the pollution, and recycle the wastage and reuse them and finally to produce the electricity from waste. Energy harvesting is the main focus of the researchers all over the world. It is because of deployment of million sensor nodes and bottleneck of battery. This method avails various methods like piezoelectric, electromagnetic, solar and thermoelectric. Keywords: LED (Light emitting diode), Electromagnetic, Thermoelectric, Voltage, Sag, Piezoelectric, Power Quality
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Lu, Di, and Jian Xin Wang. "The Analysis and Research on Electromagnetic Radiation Pollution of High Voltage Transmission Line." Advanced Materials Research 374-377 (October 2011): 8–13. http://dx.doi.org/10.4028/www.scientific.net/amr.374-377.8.
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With the development of China's power industry, many cities had renovated, expanded electricity power network ,110、220 kV and above the high voltage overhead transmission lines all around the urban areas and residential areas. As the electromagnetic radiation of high-voltage transmission lines inevitability pollute on urban environment, according to the Investigation, monitoring and analysis of high voltage, based on national standard of electromagnetic radiation, this paper proposed the controlling measures and recommendations of electromagnetic radiation. Therefore, the research that the electromagnetic radiation impact on the environmental has a very high value and academic significance.
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Winarti, Septi, Sohibun, and Dedi Mardiansyah. "Rancang Bangun Miniatur Kereta Elektromagnetik Sebagai Media untuk Menjelaskan Konsep Listrik Magnet Berbasis Laboratorium Mini." Jurnal Pendidik Indonesia 1, no. 2 (December 31, 2020): 63–69. http://dx.doi.org/10.61291/jpi.v1i2.33.
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This study aims to design an electromagnetic train learning media based on a mini-laboratory and test the feasibility of this media in explaining the concept of magnetic electricity in the subtopic of electromagnetic induction. This research is an engineering study. The design of this device consists of three main components: a neodymium magnet 12x5 mm, a non-insulated enamel copper wire 1 mm, and a 1.2 V eneloop battery. The device's validity was assessed in terms of content, media, and device feasibility, which was evaluated by two lecturers, three teachers, and two colleagues using a questionnaire distribution technique. The data analysis technique used in this research is the descriptive analysis technique. Based on the questionnaire results from the experts, an average score of 88.46% was obtained for all assessment aspects, indicating a "very good" rating. Thus, the electromagnetic train media is suitable as a physics learning media to explain the concept of magnetic electricity based on a mini laboratory.
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Pilinskij, V. V., V. A. Popov, and SHahriyar SHalilekh. "About the classification of electromagnetic interference of converters electricity." Electronics and Communications 16, no. 4 (March 31, 2011): 187–92. http://dx.doi.org/10.20535/2312-1807.2011.16.4.246780.
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The procedure of energy transformation inthe converters of switch-mode power supply(SMPS) as electromagnetic interference (EMI)sources are considered. Analytic survey of theprocesses of EMI generation from SMPS is given. Spectral levels of real and standard pulsessequences are compared. It’s shown that EMIlevels sometimes exceed standards, thereforeit’s necessary to elaborate the classification ofSMPS converter as EMI sources
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Qian, Weihong. "Physical Interpretation of Electricity and Magnetism and Electromagnetic Induction." Journal of Applied Mathematics and Physics 11, no. 07 (2023): 2069–92. http://dx.doi.org/10.4236/jamp.2023.117131.
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Kamel, Emad Faiz. "Discovering the Human Heart, the Fall of Medical Science, and Correcting the Mistakes of Human Civilization." International Journal of Innovative Science and Research Technology 5, no. 7 (July 26, 2020): 453–61. http://dx.doi.org/10.38124/ijisrt20jul003.
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Before me there are only two men in all creation who did the cosmic phenomena analysis. The first is Galileo who discovered the earth is spherical the second is Isaac Newton who discovered the laws of gravitation. After that, God closed on the nature for three hundred years. So I am not a discoverer but I am an analyzer of cosmic phenomena. The heart affects the human brain with electromagnetic waves, and not, as medical science deceived us, the brain controls the heart with brain electricity. The sympathetic and parasympathetic nerves do not send the electricity from the brain to the heart but the sympathetic and parasympathetic nerves receive electromagnetic waves from the heart to the brain and all the body of human nature.
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Dayaday, Maricel G., and Jordan-James S. Olivo. "Sound to electric energy generating device." Indonesian Journal of Electrical Engineering and Computer Science 22, no. 3 (June 1, 2021): 1761. http://dx.doi.org/10.11591/ijeecs.v22.i3.pp1761-1769.
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This paper presents the potential of an electromagnetic transducer device in a form of audio speaker that is used to capture sound waves to be converted into electricity. It is an interesting concept but less explored by researchers. The objective of the study is to measure the potential of electromagnetic transducer as a way to generate electricity. It deals with the creation of electricity through movement and magnetism. Sound waves can induce movement on the surface which in turn moves the transducer thus creating electricity. The source of sound was coming from an 8-inch subwoofer speaker with a frequency of 80 Hz that was held constant throughout the experiment. Furthermore, using simple linear regression analysis, the study showed that for every linear increase of sound intensity level and distance of the source, there is an exponential increase and an exponential decrease in the voltage root mean square (RMS) respectively. The functionality assessment of the device was statistically analyzed using completely randomized design. It was found that the energy level significantly increased as the sound intensity level increases given a fixed distance of 15 mm from the source. The device could generate enough energy to power small electronics such as light emitting diodes (LED), transistor and resistor.
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Maeng, Hoyoung, and Kyung Hoon Hyun. "Multi-Objective Pareto Optimization of Tensile Membrane Architecture for Energy Harvesting." Applied Sciences 10, no. 18 (September 8, 2020): 6231. http://dx.doi.org/10.3390/app10186231.
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With the global concern about rising greenhouse-gas emissions due to fossil-fuel-based power generation, electricity production using eco-friendly energy sources is becoming increasingly important. Conversion of vibration into electricity is characterized mainly by electrostatic, electromagnetic, or piezoelectric transduction mechanisms, which can be used to generate electricity through a variety of methods. The tensile membrane architecture (TMA)—the means of electricity production investigated in this study—is an architectural structure that is classified into the same category of vibration sources as buildings and bridges, but has not been utilized previously for vibration-generated electricity. The objective of this study is to determine which TMA geometry yields optimal electricity production and stability in a specific region. The developed optimization technique can help future researchers to select the TMA type and material for specific areas and evaluate the suitability of different areas for energy harvesting via the TMA.