Partial discharge Partial discharge In electrical engineering, partial discharge (PD) is a localized dielectric breakdown (DB) of a small portion of a solid or fluid electrical insulation (EI) system under high voltage (HV) stress, which does not bridge the space between two conductors. While a corona discharge (CD) is usually revealed by a relatively steady glow or brush discharge (BD) in air, partial discharges within solid insulation system are not visible. PD can occur in a gaseous, liquid or solid insulating medium. It often starts within gas voids, such as voids in solid epoxy insulation or bubbles in transformer oil. Protracted partial
Word and Object (have the same meaning). In fact, we cannot even be sure that they are coextensive terms, because ‘terms and reference are local to our conceptual scheme’, and cannot be accounted for by stimulus meaning. It appears therefore impossible to determine a unique correct translation of the term 'gavagai', since the linguist can take any of the mentioned possibilities and have it correspond to the stimulus meaning through adaptation of logical connectives. This implies there is no matter of fact to which the word refers. Quine calls this the inscrutability of reference. This inscrutability leads to difficulties in translating sentences, especially