Tag: Electromagnetic

Natural Electromagnetic Fields in Pure and Applied Geophysics (2024)


Free Download Natural Electromagnetic Fields in Pure and Applied Geophysics by Kalyan Kumar Roy
English | EPUB | 2020 | 609 Pages | ISBN : 3030380963 | 118.7 MB
This research monograph presents all the branches of geophysics based on natural electromagnetic fields and their associated subjects. Meant for postgraduate and research level courses, it includes research guidance and collection of magnetotelluric data in some parts of Eastern India and their qualitative and quantitative interpretation. Specific topics highlighted include (i) Electrotellurics, (ii) Magnetotellurics, (iii) Geomagnetic Depth Sounding and Magnetometer Array Studies, (iv) Audio Frequency Magnetotellurics and Magnetic Methods, (v) Marine Magnetotelluric and Marine Controlled Source Electromagnetic Methods, (vi) Electrical Conductivity of Rocks and Minerals and (vii) Mathematical Modelling and Some Topics on Inversion needed for Interpretation of Geoelectrical Data.

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Natural Electromagnetic Fields in Pure and Applied Geophysics (2024)


Free Download Natural Electromagnetic Fields in Pure and Applied Geophysics by Kalyan Kumar Roy
English | EPUB | 2020 | 609 Pages | ISBN : 3030380963 | 118.7 MB
This research monograph presents all the branches of geophysics based on natural electromagnetic fields and their associated subjects. Meant for postgraduate and research level courses, it includes research guidance and collection of magnetotelluric data in some parts of Eastern India and their qualitative and quantitative interpretation. Specific topics highlighted include (i) Electrotellurics, (ii) Magnetotellurics, (iii) Geomagnetic Depth Sounding and Magnetometer Array Studies, (iv) Audio Frequency Magnetotellurics and Magnetic Methods, (v) Marine Magnetotelluric and Marine Controlled Source Electromagnetic Methods, (vi) Electrical Conductivity of Rocks and Minerals and (vii) Mathematical Modelling and Some Topics on Inversion needed for Interpretation of Geoelectrical Data.

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Electromagnetic Sources and Electromagnetic Fields


Free Download Electromagnetic Sources and Electromagnetic Fields
English | 2024 | ISBN: 9819994489 | 556 Pages | PDF EPUB (True) | 60 MB
This book presents a modified spherical harmonic expansion method in which the electromagnetic fields and their sources are expanded with the same set of spherical vector basis functions in a similar procedure. Explicit expressions for the electromagnetic fields, potentials, energies, and the related Green’s functions are derived for the spherical modes in both frequency domain and time domain. Based on the formulation, the relationships between the electromagnetic sources, the electromagnetic far fields, and the electromagnetic near fields are clearly revealed. In particular, a nonuniform transmission line model is developed for intuitively characterizing the total radiation process. The introduction of the cutoff radius and the cutoff mode degree provides a simple reference for determining the numbers of degrees of freedom of the fields associated with sources in a bounded region. Based on the theory, an efficient hybrid method for synthesizing antenna arrays with complex footprints is proposed and demonstrated with several numerical examples. Effective algorithms are also developed for reconstructing the radiating part of the current sources.

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Conducted Electromagnetic Interference in Power Converters


Free Download Conducted Electromagnetic Interference in Power Converters: Modeling, Prediction and Reduction
English | 2024 | ISBN: 981999294X | 227 Pages | PDF EPUB (True) | 86 MB
This book belongs to the subject of electrical engineering. It focuses on the modeling, prediction and reduction of conducted EMI in power converters including the AC-DC rectifiers, DC-DC converters and DC-AC inverters and provides the analytical models and solutions to conducted EMI issues in practical applications. The theoretical analysis, simulation and experimental results are well presented with figures and tables. This book is an essential and valuable reference for the graduate students and academics majoring in power electronics and the engineers being engaged in solving the conducted EMI issues in power converters. Senior undergraduate students majoring in electrical engineering and automation engineering also find this book useful.

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Applied Problems in the Theory of Electromagnetic Wave Scattering


Free Download Applied Problems in the Theory of Electromagnetic Wave Scattering by Oleg I. Sukharevsky
English | December 31, 2022 | ISBN: 0750339772 | 350 pages | MOBI | 13 Mb
This book explores the development of electromagnetic theory in the field of scattering. Solutions to applied problems of electromagnetic wave scattering are presented and include resonant electromagnetic wave scattering, solved by the integral equation method, and 2D and 3D scattering problems, solved by the asymptotical (short wave) method. The book provides worked examples throughout for analysis of the electromagnetic wave scattering processes by different objects. The key audience for this book includes researchers in the field of electromagnetic scattering and designers of radar and radio equipment.

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Alpha Sequence, The Electromagnetic Origin Of The Strong And Weak Nuclear Forces


Free Download Alpha Sequence, The: Electromagnetic Origin Of The Strong And Weak Nuclear Forces by Malcolm H Mac Gregor
English | June 10, 2022 | ISBN: 9811252327 | 156 pages | MOBI | 10 Mb
This book is centered on a surprising Tevatron and LHC experimental result, the accurate equality of gauge boson and top quark energy Ew + Ez = Et. The ramifications of this unanticipated result extend down to the lower energies, and lead to two new elementary particle paradigms. The first is the use of energies E rather than masses m for analysing particle excitation patterns, where E =mc2. The second is the recognition that ground-state particle energies are generated in the form of quantized energy packets that are produced in "α-boost" energy excitations, where α-1 ~137 is the fine structure constant. Repeated α-boosts form a "reservoir" of energy packets, which merge and reproduce the quantized energies of the various particle and quark ground-state configurations. An α-generated energy excitation path extends upward from the electron to the top quark t. The steps in this path, which contain two α-boosts, combine coherently to give the energy equation Eelectron x 18/α2 = Et, which is accurate to 0.3%. A branching energy path reproduces the energy of the bottom quark b to 0.1%. Particle energies and lifetimes are conjugate quantities, and the α-quantized particle energies are reflected in α-quantized particle mean lifetimes, as revealed by lifetime Descriptions on a logarithmic α-spaced grid. The accurate factor-of-137 spacings between the classical electron radius, Compton radius, and Bohr orbit radius suggest introducing both a radial and a mass dependence into α, which leads to an equation for the transformation of Coulomb energy into electron non-electromagnetic mass. The electron spin and magnetic moment are reproduced by a Compton-sized relativistically spinning sphere (RSS). The anomalous electron magnetic moment is also accounted for by the RSS, in response to Richard Feynman’s 1961 Challenge to provide such an explanation. The mathematics used here is straightforward, and the calculations are guided by fits to the elementary particle RPP energy and lifetime data bases, which are provided here in Appendices A and B.

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Natural Electromagnetic Fields in Pure and Applied Geophysics (2024)


Free Download Natural Electromagnetic Fields in Pure and Applied Geophysics by Kalyan Kumar Roy
English | EPUB | 2020 | 609 Pages | ISBN : 3030380963 | 118.7 MB
This research monograph presents all the branches of geophysics based on natural electromagnetic fields and their associated subjects. Meant for postgraduate and research level courses, it includes research guidance and collection of magnetotelluric data in some parts of Eastern India and their qualitative and quantitative interpretation. Specific topics highlighted include (i) Electrotellurics, (ii) Magnetotellurics, (iii) Geomagnetic Depth Sounding and Magnetometer Array Studies, (iv) Audio Frequency Magnetotellurics and Magnetic Methods, (v) Marine Magnetotelluric and Marine Controlled Source Electromagnetic Methods, (vi) Electrical Conductivity of Rocks and Minerals and (vii) Mathematical Modelling and Some Topics on Inversion needed for Interpretation of Geoelectrical Data.

(more…)

Interactions Between Electromagnetic Field and Moving Conducting Strip


Free Download Interactions Between Electromagnetic Field and Moving Conducting Strip
English | 2024 | ISBN: 3031482735 | 224 Pages | PDF EPUB (True) | 11 MB
The book combines two interrelated lines of research. One of them is devoted to the development of the theory for solving a certain class of three-dimensional electromagnetic field problems of the three-dimensional electromagnetic field, taking into account eddy currents in a moving conducting magnetizing body. Preference is given to the development of the analytical solution methods of the three-dimensional quasi-stationary problem of field conjugation in the system: "a contour of an arbitrary spatial configuration with an alternating current is conducting body with a flat boundary surface". The second direction refers to the development of mathematical models for solving applied problems, which involve the use of developed methods for calculating the electromagnetic field and their characteristics. The main application of calculation methods is aimed at solving problems of heat treatment non-ferrous and ferrous metal products using the induction method of heating in a transverse magnetic field. The inverse problems are solved to determine the inductor configuration as flat and spatial current contours for providing the necessary temperature distribution of moving metal strips. To achieve uniform heating of strips across the width using inductors in the form of flat current contours parallel to the strip surface, it is advisable to use combinations of current contours, where the geometric dimensions are determined by the size and electro-physical parameters of the metal strips. A more uniform temperature distribution during high-frequency induction heating is achieved by using inductors in the form of current contours of the required spatial configuration.

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