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Introduction

The steam engine, a major driver in the Industrial Revolution, underscores the importance of engineering in modern history. This beam engine is on display in the Technical University of Madrid.

Engineering is the creative application of science, mathematical methods, and empirical evidence to the innovation, design, construction, operation and maintenance of structures, machines, materials, devices, systems, processes, and organizations for the benefit of humankind. The discipline of engineering encompasses a broad range of more specialized fields of engineering, each with a more specific emphasis on particular areas of applied mathematics, applied science, and types of application. See glossary of engineering.

The term engineering is derived from the Latin ingenium, meaning "cleverness" and ingeniare, meaning "to contrive, devise".

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Webley IMG 6789.jpg
The Webley Revolver (also known as the Webley Top-Break Revolver or Webley Self-Extracting Revolver ) was, in various marks, the standard issue service pistol for the armed forces of the United Kingdom, the British Empire and the Commonwealth from 1887 until 1963.

The Webley is a top-break revolver and breaking the revolver reloading operates the extractor, which removes cartridges from the cylinder. The Webley Mk I service revolver was adopted in 1887 and the Mk IV, rose to prominence during the Boer War of 1899–1902. The Mk VI, introduced in 1915 during the First World War, is perhaps the best-known model.

Firing large .455 Webley cartridges, Webley service revolvers are among the most powerful top-break revolvers ever produced. The .455 calibre Webley is no longer in military service but the .38/200 Webley Mk IV variant is still in use as a police sidearm in a number of countries. With a modified, "shaved" cylinder and the use of a half moon clip, the Webley Mk VI can fire the 45 ACP cartridge, although overpressure or +P .45 ACP cartridges exceed Webley proof loads and should not be used. Many Webley Mk VIs were converted to fire 45 ACP ammunition after the remaining .455 Webley ammunition dwindled.


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Picture of an Asus motherboard

A motherboard (sometimes alternatively known as the mainboard, system board, baseboard, planar board or logic board, or colloquially, a mobo) is the main printed circuit board (PCB) found in general purpose microcomputers and other expandable systems. It holds and allows communication between many of the crucial electronic components of a system, such as the central processing unit (CPU) and memory, and provides connectors for other peripherals. Unlike a backplane, a motherboard usually contains significant sub-systems such as the central processor, the chipset's input/output and memory controllers, interface connectors, and other components integrated for general purpose use.


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