Electrodynamics of Continuous Media |
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Page 304
... Diffraction by a wedge The ordinary approximate theory of diffraction ‡ is based on the assump- tion that the deviations from geometrical optics are small . It is thereby assumed , firstly , that all dimensions are large compared with ...
... Diffraction by a wedge The ordinary approximate theory of diffraction ‡ is based on the assump- tion that the deviations from geometrical optics are small . It is thereby assumed , firstly , that all dimensions are large compared with ...
Page 308
... diffraction . † Accordingly we have near the boundary Ob of the complete shadow the asymptotic expression u ( r , $ ) = e - ikr cos ( 4 – 40 ) 1 √ ( 2π ) w Šem einz dn , ( 74.7 ) ∞- w = -- - ( † − 40 − π ) √ ( { kr ) . · Similarly ...
... diffraction . † Accordingly we have near the boundary Ob of the complete shadow the asymptotic expression u ( r , $ ) = e - ikr cos ( 4 – 40 ) 1 √ ( 2π ) w Šem einz dn , ( 74.7 ) ∞- w = -- - ( † − 40 − π ) √ ( { kr ) . · Similarly ...
Page 311
... diffraction by the slit : d = 1 sin2 kax πkа x2 dx . PROBLEM 2. A plane wave is incident on a perfectly conducting plane with a circular aperture whose radius a is small compared with the wavelength . Determine the intensity of diffracted ...
... diffraction by the slit : d = 1 sin2 kax πkа x2 dx . PROBLEM 2. A plane wave is incident on a perfectly conducting plane with a circular aperture whose radius a is small compared with the wavelength . Determine the intensity of diffracted ...
Contents
Notation X | 1 |
2 The energy of the electrostatic field of conductors | 3 |
3 Methods of solving problems in electrostatics | 9 |
Copyright | |
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angle anisotropy atoms averaging axes axis body boundary condition calculated charge circuit co-ordinates coefficient components conducting conductor constant corresponding cross-section crystal Curie point curl H current density cylinder denote depends derivative determined dielectric permeability diffraction dipole direction discontinuity distance effect electric field electromagnetic electrons electrostatic ellipsoid equation div expression external field ferroelectric ferromagnetic field H fluid flux force formula free energy frequency function given gives grad H₂ Hence incident induction integral isotropic Laplace's equation layer linear macroscopic magnetic field magnetic moment magnetisation magnitude Maxwell's equations medium metal normal obtain optical particle perpendicular piezoelectric plane polarisation PROBLEM propagation properties pyroelectric quantities refraction relation respect result rotation scalar scattering SOLUTION sphere suffixes superconducting surface symmetry tangential temperature theory thermodynamic potential tion unit volume values variable velocity wave vector wire z-axis zero