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
A Word Child turns stirring, witty, painful and joyous, the novel was received to great critical acclaim on its release. A Word Child A Word Child is the 17th novel by Iris Murdoch. First published in 1975 by Chatto and Windus, "A Word Child" charts the trials and tribulations of the title character, the "word child", Hilary Burde as he attempts to recover his soul from the misery of his troubled past. Filled in the usual Murdoch style with an array of colourful, fully rounded characters who people Hilary's world, the novel is a complex and thoughtful exploration of the possibility and meaning