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

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Page 23

The quadric will then automatically possess all the other symmetry elements that

are found in the various classes of these three systems: rotation

to the principal axis, and planes Table 3 The effect of crystal symmetry on ...

The quadric will then automatically possess all the other symmetry elements that

are found in the various classes of these three systems: rotation

**diad axes**normalto the principal axis, and planes Table 3 The effect of crystal symmetry on ...

Page 24

The lengths of the three axes of the quadric determine the property completely. If

the tensor is referred to the x, y, z crystallographic axes it takes the form shown in

Table 3. (iv) Monoclinic system. Here we must arrange one of the

The lengths of the three axes of the quadric determine the property completely. If

the tensor is referred to the x, y, z crystallographic axes it takes the form shown in

Table 3. (iv) Monoclinic system. Here we must arrange one of the

**diad axes**of ...Page 129

The longitudinal component of polarization then changes sign and when 6 = 60°,

so that the tensile stress is again along a

" direction. The figure may also be readily interpreted in terms of the converse ...

The longitudinal component of polarization then changes sign and when 6 = 60°,

so that the tensile stress is again along a

**diad axis**, it reaches a maximum in the +" direction. The figure may also be readily interpreted in terms of the converse ...

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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