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21Breathalyzer — A breathalyzer is a (breath analyser) device for estimating blood alcohol content (BAC) from a breath sample. Breathalyzer is the brand name of a series of models made by one manufacturer of these instruments (originally Smith and Wesson, later… …
22List of Raven challenges — This article details the many challenges that have been present over the seven series of Raven, the children s game show series.The many tasks and feats in which the warriors have to compete vary from series to series, some having been tweaked… …
23Monorail — For other meanings, see Monorail (disambiguation). Moscow Monorail in Russia A monorail is a rail based transportation system based on a single rail, which acts as its sole support and its guideway. The term is also used variously to describe the …
24USS Maine (ACR-1) — This article is about the ship sunk in Havana, 1898. For other ships of the same name, see USS Maine. The Maine redirects here. For the band, see The Maine (band). USS Maine entering Havana H …
25Burglar alarm — Silent alarm redirects here. For the album, see Silent Alarm (album). Burglar (or intrusion), fire and safety alarms are all electronic today. Sensors are connected to a control unit via a low voltage hardwire or narrowband RF signal which is… …
26Conical scanning — is a system used in early radar units to improve their accuracy, as well as making it easier to steer the antenna properly to point at a target. Conical scanning is similar in concept to the earlier lobe switching concept used on some of the… …
27Technology in Stargate — Naqahdah redirects here. For one of the archaeologically identified cultures of Pre Dynastic Egypt, see Naqadan culture. For the town on the west bank of the Nile in Egypt, see Naqada. For other uses, see Naqada (disambiguation). The most… …
28The Blitz — London Blitz redirects here. For the London based American football team, see London Blitz (American football). For other uses, see Blitz (disambiguation). The Blitz Part of Second World War, Home Front …
29Hyperion Cantos — Hyperion The Hyperion Cantos is a series of science fiction novels by Dan Simmons. Set in the far future, and focusing more on plot and story development than technical detail, it falls into the soft science fiction category. The title was… …
30Deep Space Network — This article is about the deep space communication network of JPL and NASA. For the network of low cost interplanetary trajectories, see Interplanetary Transport Network. Deep Space Network …
