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Relevant bibliographies by topics / Electromagnetism - electricity

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Academic literature on the topic 'Electromagnetism - electricity'

Author: Grafiati

Published: 27 July 2024

Last updated: 29 July 2024

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Journal articles on the topic "Electromagnetism - electricity"

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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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Dissertations / Theses on the topic "Electromagnetism - electricity"

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Borges, A. Tarisco. "Mental models of electromagnetism." Thesis, University of Reading, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.342567.

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Nascimento, Fernando José Barros. "Sequência de práticas com recursos multimídia para o ensino de eletromagnetismo no EJA e PROEJA." Volta Redonda, 2017. https://app.uff.br/riuff/handle/1/4700.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
Universidade Federal Fluminense. Instituto de Ciências Exatas. Programa de Pós-Graduação em Ensino de Física. Volta Redonda, RJ
O ensino de Física utilizando-se apenas a lousa, algumas exemplificações abstratas e matematizações como fundamento se revela inócuo para a modalidade de Ensino de Jovens e Adultos como o EJA e PROEJA, especialmente a eletricidade básica, o Magnetismo e Eletromagnetismo, em que, muito embora sejam interessantes na produção de conhecimento que vise ao entendimento sobre a geração de energia elétrica, tema importante em nossa sociedade atual, pouca ou nenhuma oportunidade é dada ao professor e ao aluno, no sentido de poderem desenvolver esses três temas de forma interligada, concisa e pragmática. Assim, motivar o aluno com o saber fazer, com resultados mais objetivos, ajudando-os na manipulação das práticas com a orientação do professor e o uso de vídeos livremente disponíveis ou editados dos aplicativos mais usuais para o ensino de Física, contribui para aprendizagem mais significativa, permitindo o pleno desenvolvimento das capacidades do alunado. As matérias aqui propostas de forma geral não são ensinados pelos professores na modalidade de ensino referida, até mesmo para os discentes cuja idade e série seguem os padrões considerados regulares ou próprios, o que torna as atividades aqui elaboradas de extrema importância para o ensino de Física no século XXI.
Teaching Physics using only the board, some abstract exemplification and too much mathematics the foundation reveals innocuous to the form of Youth and Adult Education as the EJA and PROEJA, especially the basic electricity, magnetism and electromagnetism, which even though they are interesting in the production of knowledge aimed at the understanding of the generation of electricity, a major issue in our society today, little or no opportunity is given to the teacher and student, in order to be able to develop these three themes interconnected, concise and pragmatic way. So Motivating students with the know-how, more objective results, helping them handling practices with the teacher's guidance and the use freely available videos or of even edited videos of the most common applications for teaching physics, contributes to more meaningful learning allowing the full development of the student body's capabilities. The materials proposed here generally are not taught by teachers in that type of education, even for students whose age series follow the standards considered regular or own, which makes the activities here developed extremely important for teaching physics at XXI century.

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Lombardi, Giulia. "Unified nonlinear electrical interfaces for hybrid piezoelectric-electromagnetic small-scale harvesting systems." Thesis, Lyon, 2020. http://www.theses.fr/2020LYSEI101.

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Ce travail de recherche présente des interfaces électroniques non-linéaires pour des systèmes hybrides de récupération d'énergie combinant des transducteurs piézoélectriques et électromagnétiques. Ces systèmes ont reçu un grand intérêt en raison de leur capacité à convertir les vibrations mécaniques en énergie électrique suffisante pour alimenter des capteurs à faible puissance. Afin d'alimenter ces appareils microélectroniques, une fois l'énergie convertie, une extraction efficace et intelligente doit être mise en place avec une unité dédiée. Les interfaces hybrides non-linéaires proposées dans ce travail, visant à inclure autant de parties électroactives que possible dans le même circuit, permettent une augmentation de la puissance de sortie finale des microgénérateurs concernés, ainsi qu'une solution pour obtenir une valeur commune de charge optimale, même si chacun des éléments traités présentent des principes de fonctionnement et des valeurs de charge optimale différents. Une première solution est dérivée du SSHI (Synchronized Switch Harvesting on Inductor) et se base sur la technique de commutation synchronisée. Cette méthode vise à remplacer l'inductance passive dans l'interface SSHI par un système électromagnétique actif, conduisant à une interface de microgénérateurs entièrement actifs et augmentant la puissance de sortie finale. Une deuxième solution est issue de la combinaison des techniques SECE (Synchronous Electric Charge Extraction) et SMFE (Synchronous Magnetic Flux Extraction), respectivement développées pour les systèmes piézoélectriques et électromagnétiques. Son principe de base consiste à transférer l'énergie de l’élément piézoélectrique vers le transducteur électromagnétique, et ensuite à extraire l'énergie du système électromagnétique, préalablement amplifiée par le transfert de charges issues du dispositif piézoélectrique. La stratégie consistant à inclure autant de parties électroactives que possible dans la même interface électrique ouvre de nouvelles possibilités de combiner plusieurs systèmes électroactifs, constituant des récupérateurs d'énergie hybride, sans inclure des étages supplémentaires dans les circuits, ce qui permet de maintenir une relative simplicité sans perte de puissance significative
In this research work, electronic nonlinear interfaces for hybrid energy harvesting systems combining piezoelectric and electromagnetic transducers are presented. Such systems have received great attention due to their ability to detect mechanical vibrations and convert them into electrical energy sufficient to power low-power sensors. In order to supply these microelectronic devices the generated sinusoidal signal needs to be rectified into a constant DC voltage. In other words, once the energy is converted, a proper and smart extraction of such energy needs to be implemented with a dedicated unit. The proposed nonlinear hybrid interfaces developed in this work, aimed at incorporating as much as electroactive parts as possible in the circuit, not only increase the final output power of the involved transducers but also provide a solution for obtaining a common optimal load value, despite dealing with elements singularly presenting different working principles and values of optimal load, without the use of additional load adaptation stages. A first solution is derived from the previously developed SSHI (Synchronized Switch Harvesting on Inductor) and based on the Synchronized Switching technique. This method aims at replacing the passive inductor in the SSHI interface with an active electromagnetic system, leading to an all-active microgenerators interface and increasing the final output power. A second solution is derived from a combination of the SECE (Synchronous Electric Charge Extraction) and SMFE (Synchronous Magnetic Flux Extraction) techniques. Its main principle consists of transferring the energy from the piezoelectric to the electromagnetic transducer and then extracting the boosted energy from the electromagnetic system. The strategy of including as much as electroactive parts within the same electrical interface open many different possibilities of interfacing more than one electroactive system, constituting hybrid energy harvesters, without including extra circuit stages, thus maintaining a relative simplicity without high power losses

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Henning, Andrew John. "Electromagnetic wave chaos in photonic crystals." Thesis, University of Nottingham, 2009. http://eprints.nottingham.ac.uk/11155/.

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Similarities in the form of the Schrodinger equation that governs the behaviour of electronic wavefunctions, and Maxwell’s equations which govern the behaviour of electromagnetic waves, allow ideas that originated in solid state physics to be easily applied to electromagnetic waves in photonic structures. While electrons moving through a semiconductor experience a periodic variation in charge, in a photonic crystal electromagnetic waves experience a periodic variation in refractive index. This leads to ideas such as bandstructure being applicable to the one and two dimensional photonic crystals used in this work. The following work will contain theoretical and experimental studies of the transmission through, and electric fields within, one dimensional photonic crystals. A slow variation in the structure of these crystals will lead to the bandstructure shifting, with an photonic analogy of electronic Bloch oscillations and Wannier-Stark ladders being seen in these structures. The two dimensional photonic crystals will be shown, through Hamiltonian ray tracing, to support both stable and chaotic ray paths. Examination of the phase space reveals the existence of ‘Dynamical Barriers’, regions in phase space supporting stable ray trajectories that divide separate regions in which the ray trajectories are chaotic. Various manners in which the bandstructure may be varied will be presented, along with a proposed switch that may be made using these structures. While the ray tracing will be carried out in photonic crystals in the limit of infinitesimally thin dielectric sheets, the model will then be developed to show the bandstructure of a photonic crystal made from finite width dielectric sheets, with examples of dispersion surfaces for these structures being presented.

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Young, Jeffrey Lee. "Electromagnetic response of thin wires over an homogeneous earth." Diss., The University of Arizona, 1989. http://hdl.handle.net/10150/184906.

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The electromagnetic response of infinitely long, thin wires over a flat earth is presented for two different applications: the shielding properties of an ensemble of parallel wires excited by a plane wave and the electromagnetic coupling of two perpendicular wires excited by a dipole. The shielding study begins with the formulation of the boundary value problem for N wires over a lossy half space. A suitable axial impedance operator is applied to obtain a system of equations whose unknowns are the currents flowing on each wire. Once the currents are determined, the aggregate field produced by the ensemble can be computed by summing N Fourier type integrals. For the specialized case of the infinite planar grid, Floquet's Theorem and Poisson's Summation Formula are invoked, transforming the linear system of equations into a closed form expression for the current flowing on each wire. We show that the electromagnetic response of the planar grid of finite extent and the grid of infinite extent are similar. For non-planar configurations, such as the semi-circular shell, shielding values of 60 dB are possible when the structure is of non-resonant dimensions; otherwise, the performance can degrade to 20 dB. In the case of the crossed wire configuration, the starting point is the development of the integral equations that govern the coupling between wires and the source; the unknowns are the spectral currents flowing in each wire. The equations are given in terms of generalized impedance functions for the situation where the wires are over a stratified earth. However, for the numerical work, only the case where the wires are in an unbounded, homogeneous medium is considered. Two numerical methods, with overlapping regions of validity, are applied: the method of moments and the method of multiple scatterers. By using the method of moments, we can obtain a matrix equation that will determine the spectral currents for any wire spacing. The multiple scatterer method leads to a more convenient matrix series solution and shows that the coupling strength is proportional to 1/d², where d is the wire separation, plus higher order inverse terms.

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Marcum, Frank. "Analysis of a test technique for hardness surveillance." Ohio : Ohio University, 1988. http://www.ohiolink.edu/etd/view.cgi?ohiou1182866116.

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Simmons, Daniel. "Hybrid methods for modelling advanced electromagnetic systems using unstructured meshes." Thesis, University of Nottingham, 2016. http://eprints.nottingham.ac.uk/33230/.

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The aim of this project is the conception, implementation, and application of a simulation tool for the accurate modeling of electromagnetic fields within inhomogeneous materials with complex shapes and the propagation of the resulting fields in the surrounding environment. There are many methods that can be used to model the scattering of an electromagnetic field, however one of the most promising for hybridisation is the Boundary Element Method (BEM), which is a surface technique, and the Unstructured Transmission Line Modeling (UTLM) method, which is a volume technique. The former allows accurate description of the scatterer's boundary and the field's radiation characteristics, but cannot model scattering by materials characterized by a non-uniform refraction index. The latter, on the contrary, can model a very broad range of materials, but is less accurate, since it has to rely on approximate absorbing boundary conditions. A method resulting in the hybridisation of BEM and UTLM can be used to construct a tool that takes into account both the interaction with non-uniform tissue and propagation in its environment. The project aims to describe in detail the implementation of the novel method, and deploy it in a heterogeneous distributed computing environment.

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Cobos, Sanchez Clemente. "Forward and inverse analysis of electromagnetic fields for MRI using computational techniques." Thesis, University of Nottingham, 2008. http://eprints.nottingham.ac.uk/10629/.

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MRI has become an invaluable tool for diagnostic medicine. Its operation is based on the principles of electromagnetism that are dictated by Maxwell's equations. MRI relies on the existence of well defined, spatially and temporally controlled magnetic fields, which are usually generated by coils of wire. Human exposure to these fields has become a safety concern, especially with the increase in the strength of the magnetic fields used. In this thesis, problems in electromagnetism relevant to different areas in MRI and involving the calculation of solutions to both forward and inverse problems are investigated using techniques derived for computational mechanics. The first section of the work focuses on the development of an accurate technique for the solution of magnetostatic inverse problems using boundary element methods (BEM) with the aim of designing optimised gradient coils. This approach was found to be an extremely effective method which can be applied to a wide range of coil geometries and is particularly valuable for designs where the coil surface has low symmetry. BEM-based approaches to designing gradient coils that reduce the likelihood of peripheral nerve stimulation due to rapidly switched magnetic fields are also considered. In the second section of the work, a novel BEM tool to allow the calculation of solutions to quasi-static forward problems has been developed, and used for the evaluation of the electric fields induced in the human body by temporally varying magnetic fields, due to either gradient switching or body movements in strong static magnetic fields. This approach has been tested by comparison with analytic solutions for simply shaped objects, exposed to switched gradients or moving in large static fields, showing good agreement between the results of numerical and analytical approaches. The BEM approach has also been applied to the evaluation of the electric fields induced in human body models. This work involved the development of an appropriate theoretical framework for the study of conducting systems moving in magnetic fields. This involved correcting some misconceptions that had propagated in the literature and allowed the development of an effcient implementation of a BEM suited to this problem.

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Knaak, Allison. "3D synthetic aperture for controlled-source electromagnetics." Thesis, Colorado School of Mines, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=3682006.

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Locating hydrocarbon reservoirs has become more challenging with smaller, deeper or shallower targets in complicated environments. Controlled-source electromagnetics (CSEM), is a geophysical electromagnetic method used to detect and derisk hydrocarbon reservoirs in marine settings, but it is limited by the size of the target, low-spatial resolution, and depth of the reservoir. To reduce the impact of complicated settings and improve the detecting capabilities of CSEM, I apply synthetic aperture to CSEM responses, which virtually increases the length and width of the CSEM source by combining the responses from multiple individual sources. Applying a weight to each source steers or focuses the synthetic aperture source array in the inline and crossline directions. To evaluate the benefits of a 2D source distribution, I test steered synthetic aperture on 3D diffusive fields and view the changes with a new visualization technique. Then I apply 2D steered synthetic aperture to 3D noisy synthetic CSEM fields, which increases the detectability of the reservoir significantly. With more general weighting, I develop an optimization method to find the optimal weights for synthetic aperture arrays that adapts to the information in the CSEM data. The application of optimally weighted synthetic aperture to noisy, simulated electromagnetic fields reduces the presence of noise, increases detectability, and better defines the lateral extent of the target. I then modify the optimization method to include a term that minimizes the variance of random, independent noise. With the application of the modified optimization method, the weighted synthetic aperture responses amplifies the anomaly from the reservoir, lowers the noise floor, and reduces noise streaks in noisy CSEM responses from sources offset kilometers from the receivers. Even with changes to the location of the reservoir and perturbations to the physical properties, synthetic aperture is still able to highlight targets correctly, which allows use of the method in locations where the subsurface models are built from only estimates. In addition to the technical work in this thesis, I explore the interface between science, government, and society by examining the controversy over hydraulic fracturing and by suggesting a process to aid the debate and possibly other future controversies.

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Barnum, Benjamin Heath. "Electromagnetic and optical characteristics of lightning measured in the earth's ionosphere /." Thesis, Connect to this title online; UW restricted, 1999. http://hdl.handle.net/1773/6843.

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Books on the topic "Electromagnetism - electricity"

1

), Bellingham School District No 501 (Wash. Magnetism, electromagnetism, electricity. Bellingham, Wash: The Schools, 1989.

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Raitt, Gordon. Electricity 2: Electromagnetism. Cambridge [Cambridgeshire]: Cambridge University Press, 1987.

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Grant, I. S. Electromagnetism. 2nd ed. Chichester [England]: Wiley, 1990.

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1938-, Olsson Martin G., ed. Classical electricity and magnetism: A contemporary perspective. Boston: Allyn and Bacon, 1987.

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Owen, George E. Introduction to electromagnetic theory. Mineola, N.Y: Dover Publications, 2003.

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Milham, Samuel. Dirty electricity: Electrification and the diseases of civilization. Bloomington: iUniverse Inc., 2012.

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Shirbīnī, Maḥmūd Aḥmad. Asāsiyāt ʻilm al-daynāmīkā al-kahrabāʼiyah al-kilāsīkiyah. al-Dawḥah: Jamiʻat Qaṭar, 1995.

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Jefimenko, Oleg D. Electricity and magnetism: An introduction to the theory of electric and magnetic fields. 2nd ed. Star City, W. Va: Electret Scientific Co., 1989.

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1942-, Bersani Ferdinando, and World Congress for Electricity and Magnetism in Biology and Medicine (2nd : 1997 : Bologna, Italy), eds. Electricity and magnetism in biology and medicine. New York: Kluwer Academic/Plenum Pub., 1999.

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Petersen, Kristen. Understanding forces of nature: Gravity, electricity, and magnetism. New York: Cavendish Square Publishing, 2015.

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Book chapters on the topic "Electromagnetism - electricity"

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Raychaudhuri, Amal Kumar. "Special Theory of Relativity and Electromagnetism." In Classical Theory of Electricity and Magnetism, 273–89. Singapore: Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-8139-4_23.

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Matsushita, Teruo. "Time-Dependent Electromagnetic Phenomena." In Electricity, 99–120. Cham: Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-44002-1_6.

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Matsushita, Teruo. "Electromagnetic Induction." In Electricity and Magnetism, 231–53. Tokyo: Springer Japan, 2013. http://dx.doi.org/10.1007/978-4-431-54526-2_10.

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Matsushita, Teruo. "Electromagnetic Wave." In Electricity and Magnetism, 271–90. Tokyo: Springer Japan, 2013. http://dx.doi.org/10.1007/978-4-431-54526-2_12.

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Matsushita, Teruo. "Electromagnetic Wave." In Electricity and Magnetism, 339–62. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-82150-0_12.

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Matsushita, Teruo. "Electromagnetic Induction." In Electricity and Magnetism, 289–316. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-82150-0_10.

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Surkov, Vadim, and Masashi Hayakawa. "Atmospheric Electricity." In Ultra and Extremely Low Frequency Electromagnetic Fields, 57–106. Tokyo: Springer Japan, 2014. http://dx.doi.org/10.1007/978-4-431-54367-1_3.

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Rohlf, James W. "Electromagnetic Waves." In Guide to Electricity and Magnetism, 151–70. Boca Raton: CRC Press, 2024. http://dx.doi.org/10.1201/9781032646688-10.

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Gunther, Leon. "Electricity, Magnetism, and Electromagnetic Waves." In The Physics of Music and Color, 127–78. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4614-0557-3_5.

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Gunther, Leon. "Electricity, Magnetism, and Electromagnetic Waves." In The Physics of Music and Color, 101–36. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-19219-8_5.

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Conference papers on the topic "Electromagnetism - electricity"

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Machado, J. A. Tenreiro, Isabel S. Jesus, and Alexandra Galhano. "A Fractional Calculus Perspective in Electromagnetics." In ASME 2005 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/detc2005-84862.

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Some experimentation with magnets was beginning in the late 19th century. By then reliable batteries had been developed and the electric current was recognized as a stream of charge particles. Maxwell developed a set of equations expressing the basic laws of electricity and magnetism, and demonstrated that these two phenomena are complementary aspects of electromagnetism. He showed that electric and magnetic fields travel through space, in the form of waves, at a constant velocity. Maxwell is generally regarded as the nineteenth century scientist who had the greatest influence on twentieth century physics, making contributions to the fundamental models of nature. Bearing these ideas in mind, in this study we apply the concept of fractional calculus and some aspects of electromagnetism, to the static electric potential, and we develop a new fractional order approximation method to the electrical potential.

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Skladanek, Yan, Johan Der Hagopian, and Jarir Mahfoud. "Energy Cost Assessment of the Active Control of a Rotating Machine by Using an Electromagnetic Actuator and a Piezoelectric Actuator." In ASME Turbo Expo 2009: Power for Land, Sea, and Air. ASMEDC, 2009. http://dx.doi.org/10.1115/gt2009-59625.

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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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Buentello-Montoya, David, and Francisco Javier Montes-Montejo. "Problem-Based Learning as a Tool to Foster Electricity and Electromagnetism-related Concepts in an Engineering Course." In 2022 IEEE International Conference on Teaching, Assessment and Learning for Engineering (TALE). IEEE, 2022. http://dx.doi.org/10.1109/tale54877.2022.00035.

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Dumitru, Razvan Constantin, and Teodor Grimalschi. "Procesul de antrenament sportiv al gimnastelor de 8-11 ani în baza informațiilor biopsihoelectromagnetice ale organismului." In Congresul Ştiinţific Internaţional "Sport. Olimpism. Sănătate". State University of Physical Education and Sport, Republic of Moldova, 2022. http://dx.doi.org/10.52449/soh22.15.

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The sports training activity in artistic gymnastics is characterized by operational information regarding body movements of a technical nature, executed with ease, amplitude, expressiveness, motor coordination, emotional balance, resistance to stress and focused attention. The psychobiological training must induce the psychic component, along with the motor component with which it interconditions. Biopsychoenergy has the ability to increase sensitivity, moral strength, intellectual power, strength, vigor, determination in attitudes, in actions and the ability to act.The body constantly emits and absorbs energy fields, which interact. Sounds, light, electricity, magnetism, electromagnetism, as well as various other types of energy originate from it [9, p. 18]. Because of the strong electromagnetic universe of the aura, we constantly emit electrical energy and absorb magnetic energy [9, p. 34]. According to Guja C. [3], electric charges at rest produce only electric field, their movement with uniform speed produces magnetic field, but the accelerated movement of these charges produces the electromagnetic field. From a biomechanical point of view, artistic gymnastics contains a very wide variety of movements, with the help of which a wide range of connections and combinations can be achieved, the gymnast being forced to master the biopsychomagnetism of the body in unusual conditions, to overcome its internal forces and external ones. The alternation of dynamic and static effort also brings with it a peculiarity of bioelectromagnetic information of the body. The results of the research contained in this article will be useful to gymnastics coaches, and not only, having an important methodological value at the level of knowledge of the style of integral technical-tactical training based on the biopsychoelectromagnetic information of the body of 8-11-year-old gymnasts.

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Novikov, Aleksey, M. Hripchenko, and P. Rasskazov. "COMBINED ELECTRICITY SYSTEM TRANSPORT VEHICLES." In Power energy and electronics of promising cars. FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov, 2022. http://dx.doi.org/10.34220/peepc2021_54-59.

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The paper presents a method for an improved power supply system for transport vehicles, which consists in the use of a combined system consisting of a low-power electromagnetic generator and a thermoelectric generator. This method will improve the efficiency and environmental friendliness of transport vehicles.

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Baxi, C. B., N. G. Kodochigov, S. E. Belov, and M. N. Borovkov. "Tribological Tests of Friction Pair Materials for the GT-MHR Turbomachine Catcher Bearings." In STLE/ASME 2008 International Joint Tribology Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/ijtc2008-71259.

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A power plant with high-temperature helium-cooled reactors (GT-MHR) (Figure 1) for electricity generation includes a turbomachine (TM) that provides helium circulation in the primary circuit and converts the coolant thermal power into electricity in the direct gas turbine cycle. Operability of the TM for the GT-MHR reactor plant (Figure 2) mainly depends on reliability of the electromagnetic suspension system for the vertical flexible rotor with a total weight of 67.7 tons and length of 29 meters. The electromagnetic suspension system for the TM rotor consists of axial and radial electromagnetic bearings (EMB), EMB control system, and catcher bearings (CB).

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Huang, Hongtao, Lei Wang, Jiangtao Zhang, Xianlin Pan, and Zuliang Lu. "Traceability of digital electricity meters." In 2012 Conference on Precision Electromagnetic Measurements (CPEM 2012). IEEE, 2012. http://dx.doi.org/10.1109/cpem.2012.6250888.

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Uman, M. A., V. A. Rakov, J. Schoene, K. J. Rambo, J. Jerauld, and G. H. Schnetzer. "Close Lightning Electromagnetic Environment for Aircraft Testing." In International Conference on Lightning and Static Electricity. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2001. http://dx.doi.org/10.4271/2001-01-2880.

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Cronkleton, Michelle, and Chuck Beuning. "Continued Electromagnetic Protection of Aircraft and Systems." In International Conference on Lightning and Static Electricity. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2001. http://dx.doi.org/10.4271/2001-01-2889.

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Volpi, Valeria, Maurizio Aprà, Marcello D’Amore, Maria Sabrina Sarto, and Alberto Scarlatti. "VAM-LIFE: Virtual Aircraft ElectroMagnetic Lightning Indirect Effect Evaluation." In International Conference on Lightning and Static Electricity. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2001. http://dx.doi.org/10.4271/2001-01-2892.

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Reports on the topic "Electromagnetism - electricity"

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Khan, Asad, Angeli Jayme, Imad Al-Qadi, and Gregary Renshaw. Embedded Energy Harvesting Modules in Flexible Pavements. Illinois Center for Transportation, April 2024. http://dx.doi.org/10.36501/0197-9191/24-008.

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Energy from pavements can be harvested in multiple ways to produce clean energy. One of the techniques is electromagnetic energy harvesting, in which mechanical energy from vehicles is captured in the form of input displacement to produce electricity. In this study, a rack-and-pinion electromagnetic energy harvester proposed in the literature as a speed bump is optimized for highway-speed vehicles. A displacement transfer plate is also proposed, with a minimum depth of embedment in the pavement to carry input displacements from passing vehicles and excite the energy harvester. The energy harvester was designed, and kinematic modeling was carried out to establish power–output relations as a function of rack velocity. Sensitivity analysis of various parameters indicated that, for high-speed applications where rack velocities are relatively high, small input excitations could be harnessed to achieve the rated revolutions per minute (RPM) of the generator. A set of laboratory tests was conducted to validate the kinematic model, and a good correlation was observed between measured and predicted voltages. Dynamic modeling of the plate was done for both recovery and compression to obtain the plate and rack velocities. Using Monte Carlo simulation, the plate was designed for a class-9 truck with wide-base tires moving at 128 km/h. Design and layout of the energy harvester with a displacement transfer plate was proposed for field validation. The energy harvester with the displacement plate could be integrated with transverse rumble strips in construction zones and near diversions. Hence, it could be used as a standalone system to power roadside applications such as safety signs, road lights, speed cameras, and vehicle-to-infrastructure (V2I) systems.

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Murray, Chris, Keith Williams, Norrie Millar, Monty Nero, Amy O'Brien, and Damon Herd. A New Palingenesis. University of Dundee, November 2022. http://dx.doi.org/10.20933/100001273.

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Robert Duncan Milne (1844-99), from Cupar, Fife, was a pioneering author of science fiction stories, most of which appeared in San Francisco’s Argonaut magazine in the 1880s and ’90s. SF historian Sam Moskowitz credits Milne with being the first full-time SF writer, and his contribution to the genre is arguably greater than anyone else including Stevenson and Conan Doyle, yet it has all but disappeared into oblivion. Milne was fascinated by science. He drew on the work of Scottish physicists and inventors such as James Clark Maxwell and Alexander Graham Bell into the possibilities of electromagnetic forces and new communications media to overcome distances in space and time. Milne wrote about visual time-travelling long before H.G. Wells. He foresaw virtual ‘tele-presencing’, remote surveillance, mobile phones and worldwide satellite communications – not to mention climate change, scientific terrorism and drone warfare, cryogenics and molecular reengineering. Milne also wrote on alien life forms, artificial immortality, identity theft and personality exchange, lost worlds and the rediscovery of extinct species. ‘A New Palingenesis’, originally published in The Argonaut on July 7th 1883, and adapted in this comic, is a secular version of the resurrection myth. Mary Shelley was the first scientiser of the occult to rework the supernatural idea of reanimating the dead through the mysterious powers of electricity in Frankenstein (1818). In Milne’s story, in which Doctor S- dissolves his terminally ill wife’s body in order to bring her back to life in restored health, is a striking, further modernisation of Frankenstein, to reflect late-nineteenth century interest in electromagnetic science and spiritualism. In particular, it is a retelling of Shelley’s narrative strand about Frankenstein’s aborted attempt to shape a female mate for his creature, but also his misogynistic ambition to bypass the sexual principle in reproducing life altogether. By doing so, Milne interfused Shelley’s updating of the Promethean myth with others. ‘A New Palingenesis’ is also a version of Pygmalion and his male-ordered, wish-fulfilling desire to animate his idealised female sculpture, Galatea from Ovid’s Metamorphoses, perhaps giving a positive twist to Orpheus’s attempt to bring his corpse-bride Eurydice back from the underworld as well? With its basis in spiritualist ideas about the soul as a kind of electrical intelligence, detachable from the body but a material entity nonetheless, Doctor S- treats his wife as an ‘intelligent battery’. He is thus able to preserve her personality after death and renew her body simultaneously because that captured electrical intelligence also carries a DNA-like code for rebuilding the individual organism itself from its chemical constituents. The descriptions of the experiment and the body’s gradual re-materialisation are among Milne’s most visually impressive, anticipating the X-raylike anatomisation and reversal of Griffin’s disappearance process in Wells’s The Invisible Man (1897). In the context of the 1880s, it must have been a compelling scientisation of the paranormal, combining highly technical descriptions of the Doctor’s system of electrically linked glass coffins with ghostly imagery. It is both dramatic and highly visual, even cinematic in its descriptions, and is here brought to life in the form of a comic.

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