public address equipment
81ADT Security Services — Infobox Company company name = ADT Fire Security. company company type = Security Detection and Prevention foundation = 1874, acquired by Tyco 1997 location = Boca Raton, Florida industry = Fire detection, Fire suppression, Security systems,… …
82Black site — blacksite redirects here. For other uses, see Black Site (disambiguation). In military terminology, a black site is a location at which an unacknowledged black project is conducted. Recently, the term has gained notoriety in describing secret… …
83Noise mitigation — is a set of strategies to reduce noise pollution. The main areas of noise mitigation or abatement are: transportation noise control, architectural design, and occupational noise control. Roadway noise and aircraft noise are the most pervasive… …
84Paranoia (role-playing game) — Paranoia 25th Anniversary Troubleshooters Edition Designer(s) Greg Costikyan, Dan Gelber, Eric Goldberg, Allen Varney (current edition) …
85Manila Light Rail Transit System — Overview Type …
86Olympic Games — 1. Also called Olympian Games. the greatest of the games or festivals of ancient Greece, held every four years in the plain of Olympia in Elis, in honor of Zeus. 2. a modern international sports competition, held once every four years. [1600 10]… …
87Vacuum tube — This article is about the electronic device. For experiments in an evacuated pipe, see free fall. For the transport system, see pneumatic tube. Modern vacuum tubes, mostly miniature style In electronics, a vacuum tube, electron tube (in North… …
88Mixing console — In professional audio, a mixing console, or audio mixer, also called a sound board, mixing desk, or mixer is an electronic device for combining (also called mixing ), routing, and changing the level, timbre and/or dynamics of audio signals. A… …
89List of vacuum tubes — This is a list of vacuum tubes or thermionic valves. Before the advent of semiconductor devices, hundreds of tube types were used in consumer and industrial electronics; today only a few types are still used in specialized applications. Contents… …
90Target Corporation — This article is about the United States retail company and its stores. For the Australian retail stores, see Target Australia. Target Corporation Type Public company Traded as NYSE:  …
