By Vladimir V. Mitin, Dmitry I. Sementsov
Modern expertise is quickly constructing and therefore destiny engineers have to gather complex wisdom in technological know-how and know-how, together with electromagnetic phenomena. This e-book is a latest textual content of a one-semester path for junior electric engineering scholars. It covers a large spectrum of electromagnetic phenomena resembling, floor waves, plasmas, photonic crystals, damaging refraction in addition to similar fabrics together with superconductors. moreover, the textual content brings jointly electromagnetism and optics because the majority of texts speak about electromagnetism disconnected from optics. by contrast, during this ebook either are mentioned. Seven labs were constructed to accompany the cloth of the ebook.
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Extra resources for An introduction to applied electromagnetics and optics
The magnetic moment of a multielectron atom is the vector sum of the orbital and spin moments from all its electrons. The magnetic fields of electrons (spin and orbital) determine a wide range of magnetic properties. The interaction of the atomic magnetic moments with an external magnetic field accounts for the magnetic properties of the material. Let us consider a relatively small volume of a particular material. The total magnetic moment of all atoms in this volume is μm=∑ μi. 35) The magnetization M of a material is defined as the magnetic moment per unit volume of medium defined as M=limVol→0(1Vol∑ μi).
27 r∓≃r±l cos α2 and r−−r+=l cos α, r−r+≈r2. 9 Electric potential of a dipole at point A. 26, we have the following expression for the dipole potential: φdip=keql cos αr2=keql⋅rr3. 28) We note that the dipole potential decreases faster with the distance (φdip~1/r2) than the potential of a point charge (φpoint~1/r). 21 because E perpendicular to dl at each point of the surface φ = const. 13) the mutual orientation of electric field E and equipotential surfaces. Then, the potential energy of a charged conductor equals Ue=12∫φdq=12φ∫dq=12φq.
Assume that r− and r+ are much larger than the charge separation l. 17. 0 cm. Determine the electric force between the two rods. 11 A thin insulating rod is bent into a semicircle of radius R. 18 as a hint). 12 A metal sphere of radius R is charged with charge Q. Determine the polarization of the dielectric shell if the dielectric permittivity of the shell is equal to κ. Determine the energy stored in each capacitor. 17 Interaction of an infinitely long insulating rod with charge density λ 1 and an insulating rod of length l with linear density λ2.
An introduction to applied electromagnetics and optics by Vladimir V. Mitin, Dmitry I. Sementsov