31. Ferroelectric, dielectric ( paraelectric ) and piezoelectric materials have electric polarisation. 32. This oxide layer acts as dielectric in an electrolytic capacitor. 33. His research activities extend beyond superconductivity to magnetism and dielectrics . 34. Dielectric constants lower than 2.0 have been reported.35. The related piezoelectric effect occurs only in a particular class of dielectrics . 36. Dielectric heating involves the heating of electrically insulating materials by dielectric loss.37. Dielectric heating involves the heating of electrically insulating materials by dielectric loss. 38. In 1924, he published a large monograph on dielectrics . 39. The permittivity and the dielectric thickness are the determining parameter for capacitors. 40. Dielectric breakdowns or shorts between the electrodes do not destroy the component.