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
Latin word order approval: He notes that the sentence would be ruined rhythmically if the word order of the last three words were changed to "comprobavit fili temeritas". What was apparently admired here was the clausula of "comprobavit" with its double trochaic – u – – rhythm; whereas "temeritas" would make a rhythm of u u u –, which Cicero says would produce an unsatisfying effect in Latin, despite being recommended by Aristotle. The 1st-century A.D. teacher of oratory, Quintilian, remarks that hyperbaton (switching words round) is often used to make a sentence more euphonious. He gives the example of the following sentence