Classical ElectrodynamicsProblems after each chapter |
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Page 211
... velocity , called the group velocity : υα = δω dk ( 7.32 ) If an energy density is associated with the magnitude of the wave ( or its absolute square ) , it is clear that in this approximation the transport of energy occurs with the ...
... velocity , called the group velocity : υα = δω dk ( 7.32 ) If an energy density is associated with the magnitude of the wave ( or its absolute square ) , it is clear that in this approximation the transport of energy occurs with the ...
Page 331
... velocity equal to the sound velocity s . But there is also a transverse wave ( V1 • VẠ 0 ) with a phase velocity equal to the Alfvén velocity v . This Alfvén wave is a purely magnetohydrodynamic phenomenon which depends only on the ...
... velocity equal to the sound velocity s . But there is also a transverse wave ( V1 • VẠ 0 ) with a phase velocity equal to the Alfvén velocity v . This Alfvén wave is a purely magnetohydrodynamic phenomenon which depends only on the ...
Page 340
... velocity is much larger than , and the group velocity much smaller than , the rms thermal velocity ( u2 ) . As the wave number increases towards kp , the phase velocity decreases from large values down towards ( u2 ) 1⁄2 . Consequently ...
... velocity is much larger than , and the group velocity much smaller than , the rms thermal velocity ( u2 ) . As the wave number increases towards kp , the phase velocity decreases from large values down towards ( u2 ) 1⁄2 . Consequently ...
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4-vector Ampère's law angle angular distribution approximation atomic axis boundary conditions calculate Chapter charge density charge q charged particle coefficients collisions component conductor consider coordinates cross section current density cylinder d³x delta function dielectric constant diffraction dimensions dipole direction discussed E₁ electric field electromagnetic fields electron electrostatic energy loss expansion expression factor frequency given Green's function impact parameter incident particle inside integral inversion Laplace's equation linear Lorentz transformation macroscopic magnetic field magnetic induction magnetic moment magnitude Maxwell's equations meson modes molecules momentum motion multipole nonrelativistic normal obtain oscillations P₁ parallel plasma point charge Poisson's equation polarization problem radiation radius region relativistic result scalar scalar potential scattering shown in Fig shows solution spherical surface surface-charge density theorem transverse unit V₁ vanishes vector potential velocity volume wave equation wave number wavelength written zero ΦΩ