## Physical Properties of Crystals: Their Representation by Tensors and Matrices |

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Page 195

If hl, h2, h3 are the quantities of heat traversing, in unit time, unit areas

perpendicular to Oxl, Ox2, Ox3, respectively, it is easy to show that they are the

components of a vector h (in the sense defined in Ch. I, § 3). h is in the direction

of

If hl, h2, h3 are the quantities of heat traversing, in unit time, unit areas

perpendicular to Oxl, Ox2, Ox3, respectively, it is easy to show that they are the

components of a vector h (in the sense defined in Ch. I, § 3). h is in the direction

of

**heat flow**...Page 197

Thus, for example, k12 and r12 refer to quite different experiments. k12 gives the

result of measuring the x1 component of

temperature gradient is along x2; thus r12, on the other hand, refers to an ...

Thus, for example, k12 and r12 refer to quite different experiments. k12 gives the

result of measuring the x1 component of

**heat flow**in an experiment in which thetemperature gradient is along x2; thus r12, on the other hand, refers to an ...

Page 199

(ii)

Fig. 11.2a be of the same substance and in the same orientation as the crystal in

Fig. 11.1 a. If a temperature difference is now maintained between the two ends

of ...

(ii)

**Heat flow**down a long rod. Let the crystal shown in the form of a long rod inFig. 11.2a be of the same substance and in the same orientation as the crystal in

Fig. 11.1 a. If a temperature difference is now maintained between the two ends

of ...

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### Contents

THE GROUNDWORK OF CRYSTAL PHYSICS | 3 |

EQUILIBRIUM PROPERTIES | 51 |

ELECTRIC POLARIZATION | 68 |

69 other sections not shown

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### Common terms and phrases

angle anisotropic applied biaxial birefringence centre of symmetry Chapter coefficients conductivity crystal classes crystal properties crystal symmetry cube cubic crystals defined denoted diad axis dijk direction cosines electric field electro-optical effect ellipsoid equal equation example expression follows force given gives heat flow Hence hexagonal indicatrix isothermal isotropic lattice left-handed magnetic magnitude matrix notation measured moduli monoclinic number of independent Onsager's Principle optic axis optical activity orientation permittivity perpendicular photoelastic effect piezoelectric effect plane plate point group positive principal axes produced pyroelectric effect quadric quantities radius vector referred refractive index relation representation quadric represents right-handed rotation scalar second-rank tensor set of axes shear shown shows strain stress suffix notation symbol 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