Insulator Charging Valence Band Temperature Dependence Relative Permittivity Insulators and Conductors Electric Dipoles in Insulators Electrostatic Induction in Insulators Definition of Insulators Bound Electrons Electrical Breakdown Space-Charge Polarization Electrical Resistivity Dielectric Constant Polarization of Insulators Bound Surface Charge Orientational Polarization Insulator Surface Charge Molecular Polarization Atomic Polarization Dielectric Interfaces Dielectric Strength Dielectric Properties Common Insulator Examples Insulator Applications Free and Bound Charges