Corona discharge 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 electrically charged. Spontaneous corona discharges occur naturally in high-voltage systems unless care is taken to limit the electric field strength. A corona will occur when the strength of the electric field (potential gradient) around a conductor is high enough to form a conductive region, but not high enough to cause electrical breakdown or arcing to nearby objects. It is often seen as a bluish (or other color) glow in the air adjacent to pointed metal
Crown Point, Tobago lighthouse consist of a square metal tower with gallery and lantern high and has a focalheight of . It is powered by solar unit and emits an alternating group of four white flashing repeated every 20 seconds visible up to . Crown Point, Tobago Crown Point is a town in southwestern Tobago, Trinidad and Tobago. It contains the Arthur Napoleon Raymond Robinson International Airport which was formerly known as the Crown Point Airport. It is near Store Bay, Buccoo Reef, and Pigeon Point. The name component "Crown" does not derive from the English word "crown", but from the Englisch word