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121Technology of the Discworld — The technology depicted in Terry Pratchett s Discworld novels takes two forms: magical and mechanical. Nearly all technology early in the series is at least partially magical, but in recent books there has been something of an industrial… …
122Diffusion of technology in Canada — This article outlines the history of the diffusion or spread of technology in Canada. Technologies chosen for treatment here include, in rough order, transportation, communication, energy, materials, industry, public works, public services… …
123Elevator — For other uses, see Elevator (disambiguation). A set of lifts in the lower level of a London Underground station. The arrows indicate each elevator s position and direction of travel …
124Fighter aircraft — A fighter aircraft is a military aircraft designed primarily for air to air combat with other aircraft, as opposed to a bomber, which is designed primarily to attack ground targets by dropping bombs. Fighters are comparatively small, fast, and… …
125Locomotive — A locomotive is a railway vehicle that provides the motive power for a train. The word originates from the Latin loco from a place , ablative of locus , place + Medieval Latin motivus , causing motion , and is a shortened form of the term… …
126Tram — A tram, tramcar, trolley, trolley car, or streetcar is a railborne vehicle, of lighter weight and construction than a train, designed for the transport of passengers (and, very occasionally, freight) within, close to, or between villages, towns… …
127Vacuum 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… …
128Vacuum cleaner — Cylinder vacuum cleaner for home use. French train vacuum cleaner …
