Xem 1-20 trên 587 kết quả Electromagnetism
  • We have known the close connection between changing eletric fields and magnetic fields. They can create each other and form a system of electromagnetic fields.  Electromagnetic fields can propagate in the space (vacuum or material environment). We call them electromagnetic waves. They play a very important role in science and technology.

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  • This volume, derived from the Handbook of Engineering Electromagnetics (2004), is intended as a desk reference for the fundamentals of engineering electromagnetics. Because electromagnetics provides the underpinnings for many technological fields such as wireless communications, fiber optics, microwave engineering, radar, electromagnetic compatibility, material science, and biomedicine, there is a great deal of interest and need for training in the concepts of engineering electromagnetics.

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  • In this chapter, we present in a nutshell the fundamental aspects of engineering electromagnetics from the view of looking back in a reflective fashion at what has already been learned in undergraduate electromagnetics courses as a novice. The first question that electromagnetics.

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  • Any electromagnetic phenomenon capable of impairing the performance of a device, equipment or system, etc. An electromagnetic disturbance can be electromagnetic noise, an unwanted signal or a change in the propagation medium itself.

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  • Tham khảo sách 'spheroidal wave functions in electromagnetic theory', kỹ thuật - công nghệ, điện - điện tử phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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  • The study of electromagnetic radiation (EM) can be divided into two distinct areas: full solution of Maxwell's Equations relevant to the specific boundary conditions in a special general case and into application of EM radiation that results in modern life e.g. medicine, telecommunication, electromagnetic compatibility (EMC) etc. The reader should have a specific scientific background and must be familiar with the fundamental ideas of EM theory for the first area. Basic understanding of applying the radiation techniques in modern life is needed for the second.

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  • Tham khảo sách 'automotive electromagnetic compatibility', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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  • Among the branches of classical physics, electromagnetism is the domain which experiences the most spectacular development, both in its fundamental and practical aspects. The quantum corrections which generate non-linear terms of the standard Maxwell equations, their specific form in curved spaces, whose predictions can be confronted with the cosmic polarization rotation, or the topological model of electromagnetism, constructed with electromagnetic knots, are significant examples of recent theoretical developments. ...

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  • This is a companion volume to Electromagnetism for Electronic Engineers (3rd edn.) (Ventus, 2009). It contains the worked examples, together with worked solutions to the end of chapter examples, which featured in the previous edition of the book. I have discovered and corrected a number of mistakes in the previous edition.

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  • In this volume I present some examples of napla calculus, vector potentials, Green’s identities, curvilinear coordinates , Electromagnetism and various other types, cf. also Calculus 2b, Functions of Several Variables. Since my aim also has been to demonstrate some solution strategy I have as far as possible structured the examples according to the following form A Awareness, i.e. a short description of what is the problem. D Decision, i.e. a reflection over what should be done with the problem. I Implementation, i.e. where all the calculations are made. C Control, i.e.

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  • Resistors in an AC circuit, capacitors in an AC circuit, inductors in an AC circuit, the RLC series circuit, power in an ac circuit, resonance in a series rlc circuit, the transformer,... As the main contents of the document "Alternating current circuits and electromagnetic waves". Invite you to consult.

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  • Introduction waves and phasors, transmission lines, vector analysis, electrostatics, magnetostatics, maxwell’s equations for time-varying fields, plane-wave propagation, wave reflection and transmission,... As the main contents of the document "Fundamentals of Applied Electromagnetics 6e by Fawwaz T. Ulaby, Eric Michielssen, and Umberto Ravaioli". Invite you to consult.

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  • Lecture Engineering electromagnetics: Coulomb’s law and electric field intensity include all of the following content: Coulomb’s law, electric field intensity, field due to a continuous volume charge distribution, field of a line charge, field of a sheet charge, sketches of fields.

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  • Lecture Engineering electromagnetics: Current and conductors include all of the following content: Current and current density, metallic conductors, conductor properties & boundary conditions, the method of images, semiconductors.

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  • Lecture Engineering electromagnetics - Dielectrics and capacitance include all of the following content: Dielectric materials, boundary conditions for perfect dielectric materials, capacitance, using field sketches to estimate capacitance, current density and flux density.

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  • Lecture Engineering electromagnetics - Energy and potential include all of the following content: Moving a point charge in an electric field, the line integral, potential difference and potential, the potential field of a point charge, the potential field of a system of charges, potential gradient, the dipole, energy density in the electrostatic field.

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  • Lecture Engineering electromagnetics: Electric flux density, Gauss’ law and divergence include all of the following content: Electric flux density, gauss’ law, divergence, Maxwell’s first equation, the vector operator, the divergence theorem.

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  • Lecture Engineering electromagnetics - Vector analysis presents the following content: Scalars and vectors, the rectangular coordinate system, the Dot product and the cross product, the circular cylindrical coordinate system, the spherical coordinate system.

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  • Lecture Engineering electromagnetics - Poisson’s and Laplace’s equations presents the following content: Poisson’s equation, Laplace’s equation, uniqueness theorem, examples of the solution of Laplace’s equation, examples of the solution of Poisson’s equation, product solution of Laplace’s equation, the iteration method.

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  • Lecture Engineering electromagnetics - The steady magnetic field presents the following content: Biot – Savart law, Ampere’s circuital law, Curl, Stokes’ theorem, magnetic flux and magnetic flux density, magnetic potential, derivation of the steady – magnetic – field law.

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