## Physical Properties of Crystals |

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Page 27

We have already met special cases of this property, in that the

the directions of the semi-axes are of lengths 1/Voi, 1/Voa, 1/Vos. The same

considerations apply to any second-rank symmetrical tensor property Sų. In

general S ...

We have already met special cases of this property, in that the

**radius vectors**inthe directions of the semi-axes are of lengths 1/Voi, 1/Voa, 1/Vos. The same

considerations apply to any second-rank symmetrical tensor property Sų. In

general S ...

Page 28

The radius-normal property of the representation ellipsoid. The figure shows the

central section of the ellipsoid which contains the

normal from O on to the tangent plane at P. The tangent plane is thus seen on

edge.

The radius-normal property of the representation ellipsoid. The figure shows the

central section of the ellipsoid which contains the

**radius vector**OP and thenormal from O on to the tangent plane at P. The tangent plane is thus seen on

edge.

Page 31

connected with the magnitude S of the property in that direction by S = 1/r?, r = 1/

VS. Radius-normal property ($ 7.2). If p = S, q}, and if a

**Radius vector**property ($7.1). The**radius vector**r of the representation quadric isconnected with the magnitude S of the property in that direction by S = 1/r?, r = 1/

VS. Radius-normal property ($ 7.2). If p = S, q}, and if a

**radius vector**OP of the ...### What people are saying - Write a review

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### Contents

THE GROUND WORK OF CRYSTAL PHYSICS | 3 |

Summary | 29 |

EQUILIBRIUM PROPERTIES | 45 |

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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