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Downforce is a downwards lift force created by the aerodynamic features of a vehicle. If the vehicle is a car, the purpose of downforce is to allow the...

The Focke-Wulf Fw 187 Falke ("Falcon") was a German aircraft designed in 1935. It was conceived by Kurt Tank as a twin-engine, high-performance fighter...

A database model is a type of data model that determines the logical structure of a database. It fundamentally determines in which manner data can be stored...

A mirror image (in a plane mirror) is a reflected duplication of an object that appears almost identical, but is reversed in the direction perpendicular...

In mathematics, a filter or order filter is a special subset of a partially ordered set (poset), describing "large" or "eventual" elements. Filters appear...

The Fonda, Johnstown and Gloversville Railroad (FJ&G) was formerly a 132-mile steam engine and electric interurban railroad that connected its namesake...

École polytechnique universitaire de l'Université de Nantes (also known as Polytech Nantes) is a grande école of engineering of the University of Nantes...

In mathematical order theory, an ideal is a special subset of a partially ordered set (poset). Although this term historically was derived from the notion...

The Porsche 909 "Bergspyder" was a spyder sports car designed and built by Porsche in 1968. Its purpose was to compete in hillclimbing competitions, specifically...

Linear multistep methods are used for the numerical solution of ordinary differential equations. Conceptually, a numerical method starts from an initial...

The Hortus botanicus of Leiden is the oldest botanical garden of the Netherlands, and one of the oldest in the world. It is located in the southwestern...

Obsidian is a naturally formed volcanic glass that was an important part of the material culture of Pre-Columbian Mesoamerica. Obsidian was a highly integrated...

A voice coil (consisting of a former, collar, and winding) is the coil of wire attached to the apex of a loudspeaker cone. It provides the motive force...

The S-13 is a 122 mm calibre unguided rocket weapon developed by the Soviet Air Force for use by military aircraft. It remains in service with the Russian...

The superposition theorem is a derived result of the superposition principle suited to the network analysis of electrical circuits. The superposition theorem...

Andrew Cowper Lawson (July 25, 1861 – June 16, 1952) was a Scots-born Canadian geologist who became professor of geology at the University of California...

A glass-ceramic-to-metal seal is a type of mechanical seal which binds glass-ceramic and metal surfaces. They are related to glass-to-metal seals, and...

In mathematics, in the theory of ordinary differential equations in the complex plane C {\displaystyle \mathbb {C} } , the points of C {\displaystyle \mathbb...

A low-probability-of-intercept radar (LPIR) is a radar employing measures to avoid detection by passive radar detection equipment (such as a radar warning...

The Biografisch Woordenboek van Nederland 1880–2000 (BWN) is a Dutch biographical dictionary, in which short biographies of well-known and less well-known...