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
Wastewater discharge standards in Latin America that produces a contamination on the water. In the case of the discharge over sewer systems the regulation is under the Chapter IV. It's stated that every company must agree with the company that provides the service of recollection of wastewater, the limits of discharge. The limits presented in this article, are those for new companies and for companies in process of identification of the type of body water that the company will discharge. Case description In August 2003, all the mining producers working in the city of Potosí must discharge their waste waters to a specific dike; otherwise they