Brush discharge plastics. The ability of an electrical discharge to cause an explosion in flammable atmospheres is measured by the "effective energy" of the discharge. The effective energy of brush discharges is 10-20 mJ, much larger than that of corona discharges 0.1 mJ. Therefore, brush discharges are considered an explosion hazard, while corona discharges are not. Brush discharges can occur from charged insulating plastics (for example polythene) to a conductor. Brush discharge A brush discharge is an electrical disruptive discharge similar to a corona discharge that takes place at an electrode with a high voltage applied to it, embedded in a nonconducting
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