corona discharge

noun

, Electricity.

1. a discharge, frequently luminous, at the surface of a conductor or between two conductors of the same transmission line, accompanied by ionization of the surrounding atmosphere and often by a power loss.

corona discharge

noun

1. an electrical discharge appearing on and around the surface of a charged conductor, caused by ionization of the surrounding gas Also calledcorona See also Saint Elmo's fire

corona discharge

1. An electrical discharge characterized by a corona, occurring when one of two conducting surfaces (such as electrodes) of differing voltages has a pointed shape, resulting in a highly concentrated electric field at its tip that ionizes the air (or other gas) around it. Corona discharge can result in power loss in the transmission of electric power, and is used in photocopying machines and air-purification devices.
2. See also electric arc

Word History and Origins

Origin of corona discharge¹

First recorded in 1915–20

Example Sentences

The "corona discharge" ionization technology from another vendor that Boeing also studied did emit ozone at levels that "exceeded regulatory standards."

From Salon

This process produces charged air molecules in the vicinity of the emitter — a corona discharge.

From Nature

The ratio of to was maximized by feeding CO2, O2 and Ar directly over the corona discharge, leading to a reduced contamination by .

From Nature

The corona needle holder was modified so that CO2, O2 and Ar are fed directly over the corona discharge.

From Nature

These electron cascades give rise to charged air molecules in the vicinity of the emitter — a phenomenon called a corona discharge.

From Nature