Physical Properties of Crystals |
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Page 20
... symmetry of its physical properties . The key to this question is a fundamental postulate of crystal physics , known as Neumann's Principle . It may be stated as follows : The symmetry elements of any physical property of a crystal must ...
... symmetry of its physical properties . The key to this question is a fundamental postulate of crystal physics , known as Neumann's Principle . It may be stated as follows : The symmetry elements of any physical property of a crystal must ...
Page 21
... element or not . First we measure the property relative to some fixed axes . Then we operate with the potential symmetry element on the crystal , † and again investigate the relation between the measured quantities , taking our ...
... element or not . First we measure the property relative to some fixed axes . Then we operate with the potential symmetry element on the crystal , † and again investigate the relation between the measured quantities , taking our ...
Page 279
... symmetry they possess . Enumeration of the 32 point groups and crystal classes . The symmetry elements of the 32 point groups are shown in Table 21 ( pp . 284-8 ) by means of stereographic projections . For the purposes of Table 21 the ...
... symmetry they possess . Enumeration of the 32 point groups and crystal classes . The symmetry elements of the 32 point groups are shown in Table 21 ( pp . 284-8 ) by means of stereographic projections . For the purposes of Table 21 the ...
Contents
THE GROUNDWORK OF CRYSTAL PHYSICS | 11 |
EQUILIBRIUM PROPERTIES | 45 |
PARAMAGNETIC AND DIAMAGNETIC SUSCEPTIBILITY | 53 |
20 other sections not shown
Common terms and phrases
angle anisotropic applied biaxial birefringence centre of symmetry Chapter coefficients components conductivity constant crystal classes crystal properties crystal symmetry cube cubic crystals D₁ defined deformation denoted diad axis dielectric dijk displacement electric field ellipsoid equal equation example expression follows forces given grad H₁ heat flow Hence hexagonal indicatrix isothermal isotropic k₁ magnetic magnitude matrix notation measured moduli monoclinic number of independent Onsager's Principle optic axis optical activity orientation orthorhombic Ox₁ P₁ parallel Peltier permittivity perpendicular photoelastic photoelastic effect piezoelectric effect plane plate polarization positive principal axes pyroelectric effect quadric radius vector referred refractive index relation representation quadric represents right-handed rotation S₁ scalar second-rank tensor shear shown strain stress suffixes symmetry elements Table temperature gradient thermal expansion thermodynamics thermoelectric effects Thomson heat tion transformation law triclinic trigonal uniaxial values wave normal wave surface x₁ Young's Modulus zero ат