## Physical Properties of Crystals |

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Page 118

(i)

possessing a

transformed piezoelectric moduli are thus, by equation (11), disk = augmakn dinn

...

(i)

**Centre of symmetry**. To illustrate the method let us first consider again a crystalpossessing a

**centre of symmetry**. The transformation matrix is diff - –89. Thetransformed piezoelectric moduli are thus, by equation (11), disk = augmakn dinn

...

Page 278

A list of symmetry elements into which the symmetry of any array can be analysed

, together with the operation associated with each element, is as follows: - (i)

A list of symmetry elements into which the symmetry of any array can be analysed

, together with the operation associated with each element, is as follows: - (i)

**centre of symmetry**: taking an origin of coordinates at the**centre of symmetry**the ...Page 280

The requirement for membership of a given crystal system is that the symmetry of

the class should possess a TABLE 20 ... Symbol on International Symmetry

element stereogram symbol

...

The requirement for membership of a given crystal system is that the symmetry of

the class should possess a TABLE 20 ... Symbol on International Symmetry

element stereogram symbol

**centre of symmetry**. no symbol 1 mirror plane full line...

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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