## Physical Properties of Crystals |

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Page 122

Thus in class 4, dai = daa, dis = d24 and dis = –das. The symbol of a double

circle is always joined to a heavy dot. If a is the numerical value of the modulus

is ...

Thus in class 4, dai = daa, dis = d24 and dis = –das. The symbol of a double

circle is always joined to a heavy dot. If a is the numerical value of the modulus

**denoted**by the heavy dot, the value of the modulus**denoted**by the double circleis ...

Page 275

We write p = [pi, ps, ps], and often

of p is

scalar product of p and q is

...

We write p = [pi, ps, ps], and often

**denote**p by pi or [p;]. The magnitude, or length,of p is

**denoted**by p: p” = p?--p}+p} = pipi. A unit vector is one of unit length. Thescalar product of p and q is

**denoted**by p.g.: p.g. = p, qi + pg.coso, where 6 is the...

Page 277

The symbol (hkl) is given a second meaning as

planes (hkl). There can be two such faces, one on each side of the crystal. The

face on the same side of the origin as the plane making intercepts ash, b/k, c/l is ...

The symbol (hkl) is given a second meaning as

**denoting**a face parallel to theplanes (hkl). There can be two such faces, one on each side of the crystal. The

face on the same side of the origin as the plane making intercepts ash, b/k, c/l 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