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
Marketing of Halo 3 on the gaming community to spread the word itself. The focus on traditional media would help expand the fan base beyond established gamers and convince the public that the game was a cultural milestone. To build public interest, Microsoft made public statements that "Halo 3" would surpass media sales records, including the July 2007 record of $166 million set by the launch of "Harry Potter and the Deathly Hallows". Microsoft's target was to sell 1.5 million copies of the game. Marketing research suggested that the ""Halo" faithful" could only be counted on to buy 75% of that amount, meaning that