## Course of theoretical physics: Electrodynemics of continuous media |

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Electrodynemics of continuous media Лев Давидович Ландау, Евгений

Михайлович Лифшиц, Лев Петрович Питаевский. If two of the semiaxes a, b, c

become equal, the system of ellipsoidal

Then the ...

Electrodynemics of continuous media Лев Давидович Ландау, Евгений

Михайлович Лифшиц, Лев Петрович Питаевский. If two of the semiaxes a, b, c

become equal, the system of ellipsoidal

**coordinates**degenerates. Let a = b > c.Then the ...

Page 21

and hyperboloids of revolution of two sheets (Fig. 9). The

degenerates to a constant, — b2, for c —+ b, and we have cow = ./ uh' +»1>/<b=-

cm. (4.11) where ¢ is the polar angle in the yz-plane. The relation between the

and hyperboloids of revolution of two sheets (Fig. 9). The

**coordinate**ndegenerates to a constant, — b2, for c —+ b, and we have cow = ./ uh' +»1>/<b=-

cm. (4.11) where ¢ is the polar angle in the yz-plane. The relation between the

**coordinates**...Page 71

To find the restrictions imposed by the presence of a threefold axis. we make a

formal transformation by introducing the complex "

_\'; the

to ...

To find the restrictions imposed by the presence of a threefold axis. we make a

formal transformation by introducing the complex "

**coordinates**" é = x+iy. rt = x—i_\'; the

**coordinate**z remains unchanged. We must also transform the tensor ~/,1“to ...

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angle anisotropy anisotropy energy antiferromagnetic atoms axes axis body boundary conditions calculation charge circuit coefﬁcient coefficients components conductor constant coordinates corresponding cross-section crystal Curie point curl H deﬁned deﬁnition denote dependence derivatives determined dielectric diffraction direction discontinuity dissipation domains electric ﬁeld electromagnetic ﬁeld electrons ellipsoid energy ﬂux expression external ﬁeld external magnetic ﬁeld ferroelectric ferromagnet ﬁeld H ﬁnd ﬁnite ﬁrst ﬁrst term ﬂow ﬂuctuations ﬂuid formula free energy frequency function given gives grad Hence incident induction inﬁnite integral isotropic Landau theory layer linear magnetic ﬁeld magnetohydrodynamics magnetostriction magnitude medium normal obtain optical particle permittivity perpendicular perturbation phase plane polarization PROBLEM propagated properties pyroelectric quantities reﬂection refraction relation respect result rotation satisﬁed scattering shock wave signiﬁcance solution sphere superconducting surface symmetry tangential temperature tensor theory thermodynamic potential transition uniaxial upper half-plane values variable velocity volume wave vector z-axis zero