Definition for word: Dead Air

Air trapped between two infiltration-free spaces which serves as a good insulator. This insulating principle is usually applied in storm doors and windows. Dead air is contained between panes of insulated glass.

Referrence from

Dead air is an unintended interruption in a radio broadcast during which no sound is transmitted .

The term is most often used in cases where programme material comes to an unexpected halt, either through operator error or for technical reasons, although it is also used in cases where a broadcaster has 'dried up'. Among professional broadcasters, dead air is considered one of the worst things that can occur.

Dead air can also apply to television broadcasting, generally when a television channel has an interruption to its output, resulting in a blank screen or in the case of digital television, a frozen image, until output is restored or an apology message is broadcast.

Having dead air during commercials or sponsorship announcements can cost networks considerable advertising revenue.

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