Corona discharge with a discharge current of a few hundred microamperes can blow out a small candle flame within about 1 cm of a discharge point. A pinwheel, with radial metal spokes and pointed tips bent to point along the circumference of a circle, can be made to rotate if energized by a corona discharge; the rotation is due to differential electric attraction between the metal spokes and the space charge shield region that surrounds the tips. Corona discharge A corona discharge is an electrical discharge brought on by the ionization of a fluid such as air surrounding a conductor that is
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