Television advertising

A television advertisement (variously called a television commercial, commercial or ad in American English, and known in British English as an advert) is a span of television programming produced and paid for by an organization, which conveys a message, typically to market a product or service. Advertisers and marketeers may refer to television commercials as TVCs.

Advertising revenue provides a significant portion of the funding for most privately-owned television networks. As of 2016^[update] the vast majority of television advertisements consist of brief advertising spots, ranging in length from a few seconds to several minutes (as well as program-length infomercials). Advertisements of this sort have promoted a wide variety of goods, services and ideas from comparatively early in the history of television.

The effects of television advertising upon the viewing public (and the effects of mass media in general) have been the subject of philosophical discourse by such luminaries as Marshall McLuhan. The viewership of television programming, as measured by companies such as Nielsen Media Research, is often used as a metric for television advertisement placement, and consequently, for the rates which broadcasters charge to advertisers to air within a given network, television program, or time of day (called a "daypart").

In many countries, including the United States, television campaign advertisements are considered indispensable for a political campaign. In other countries, such as France, political advertising on television is heavily restricted, while some countries, such as Norway, completely ban political advertisements.

...
Wikipedia