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External access point for fire sprinkler and dry standpipe at a building in San Francisco, US Antique wet standpipe preserved at Edison and Ford Winter Estates. A standpipe or riser is a type of rigid water piping which is built into multi-story buildings in a vertical position, or into bridges in a horizontal position, to which fire hoses can be connected, allowing manual application of water ...
A fire sprinkler mounted on a ceiling. A fire sprinkler or sprinkler head is the component of a fire sprinkler system that discharges water when the effects of a fire have been detected, such as when a predetermined temperature has been exceeded. Fire sprinklers are extensively used worldwide, with over 40 million sprinkler heads fitted each year.
Head cleaner or headcleaner can refer to: Tape head cleaner, a substance or device used for cleaning the record/playback heads of a magnetic tape drive such as in a video or audio tape machine; Cleaning card, card magnetic stripe magnetic head cleaner; Poppers, a muscle relaxant commonly used by the LGBTQ+ community
A Feynman sprinkler, also referred to as a Feynman inverse sprinkler or reverse sprinkler, is a sprinkler-like device which is submerged in a tank and made to suck in the surrounding fluid. The question of how such a device would turn was the subject of an intense and remarkably long-lived debate.
Impact sprinkler head. An impact sprinkler (sometimes called an impulse sprinkler) is a type of irrigation sprinkler in which the sprinkler head, driven in a circular motion by the force of the outgoing water, pivots on a bearing on top of its threaded attachment nut. Invented in 1933 by Orton Englehart, it quickly found widespread use.
Sprinkler system may refer to: Irrigation sprinkler , a device for irrigation of lawns or crops Fire sprinkler system , the entire systems of pipes and sprinklers intended for fire suppression within buildings
Sketch of the Svinfylking. The Svinfylking, Old Norse for "swine array" or "boar snout", [1] was a formation used in battle. Related to the wedge formation, it was used in Iron Age Scandinavia and later by the Vikings. [2]
Viking landing at Dublin, 841, by James Ward (1851-1924). Knowledge about military technology of the Viking Age (late 8th to mid-11th century Europe) is based on relatively sparse archaeological finds, pictorial representations, and to some extent on the accounts in the Norse sagas and laws recorded in the 12th–14th centuries.