## Physical Properties of Crystals |

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Page 195

When a difference of temperature is maintained between different parts of a solid

there is, in general, a flow of heat. ... (3) j Each component of h now depends on

all three components of

When a difference of temperature is maintained between different parts of a solid

there is, in general, a flow of heat. ... (3) j Each component of h now depends on

all three components of

**temperature gradient**, and not only on one of them as in ...Page 199

The directions of — grad T and h in relation to (a) the rod, (b) the resistivity

ellipsoid, and (c) the conductivity ellipsoid.

in general, be in an oblique direction. The arrangement of h and —grad T in

relation to ...

The directions of — grad T and h in relation to (a) the rod, (b) the resistivity

ellipsoid, and (c) the conductivity ellipsoid.

**temperature gradient**must therefore,in general, be in an oblique direction. The arrangement of h and —grad T in

relation to ...

Page 219

It should be noted that, owing to the temperature dependence of u, grad Īl

includes a part that depends on grad T. Thus, the effect of a

is not represented solely by the second term in equations (15) and (16). This is ...

It should be noted that, owing to the temperature dependence of u, grad Īl

includes a part that depends on grad T. Thus, the effect of a

**temperature gradient**is not represented solely by the second term in equations (15) and (16). This is ...

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### Contents

THE GROUND WORK OF CRYSTAL PHYSICS | 3 |

Summary | 29 |

EQUILIBRIUM PROPERTIES | 45 |

47 other sections not shown

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### Common terms and phrases

angle anisotropic applied biaxial birefringence centre of symmetry Chapter conductivity constant crystal classes crystal properties crystal symmetry cube cubic crystals defined denoted diad axis dielectric direction cosines displacement elastic compliances electric field electro-optical electro-optical effect ellipsoid equal equation example expression follows forces given gives grad heat flow Hence indicatrix isothermal isotropic magnetic magnitude matrix notation measured moduli Mohr circle monoclinic number of independent Onsager's Principle optic axis optical activity orientation parallel permittivity perpendicular photoelastic effect piezoelectric effect plane plate polarization positive principal axes produced pyroelectric effect quadric radius vector referred refractive index relation representation quadric represents right-handed rotation scalar second-rank tensor shear shown shows strain stress symmetry elements Table temperature gradient thermal expansion thermodynamics thermoelectric effects Thomson heat tion transformation law trigonal uniaxial unit volume values wave normal wave surface written zero