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A document is a written, drawn, presented, or memorialized representation of thought, often the manifestation of non-fictional, as well as fictional, content...

A muzzle brake or recoil compensator is a device connected to, or a feature integral to the construction of, the muzzle or barrel of a firearm or cannon...

When studying and formulating Albert Einstein's theory of general relativity, various mathematical structures and techniques are utilized. The main tools...

John Harrison (3 April [O.S. 24 March] 1693 – 24 March 1776) was an English carpenter and clockmaker who invented the marine chronometer, a long-sought-after...

In mathematics, the Lebesgue covering dimension or topological dimension of a topological space is one of several different ways of defining the dimension...

The Pratt & Whitney R-1690 Hornet was a widely used American aircraft engine. Developed by Pratt & Whitney, 2,944 were produced from 1926 through 1942...

Emotional isolation is a state of isolation where one may have a well-functioning social network but still feels emotionally separated from others. Population-based...

Business travel is travel undertaken for work or business purposes, as opposed to other types of travel, such as for leisure purposes or regularly commuting...

An entertainment robot is, as the name indicates, a robot that is not made for utilitarian use, as in production or domestic services, but for the sole...

A Bellman equation, named after Richard E. Bellman, is a necessary condition for optimality associated with the mathematical optimization method known...

Zermelo set theory (sometimes denoted by Z-), as set out in a seminal paper in 1908 by Ernst Zermelo, is the ancestor of modern Zermelo–Fraenkel set theory...

The Pratt & Whitney R-1535 Twin Wasp Junior was an engine used in American aircraft in the 1930s. The engine was introduced in 1932 as a 14-cylinder version...

Area code 352 is a telephone area code in the North American Numbering Plan for the area around Gainesville, Florida. It was split from area code 904 in...

Limb darkening is an optical effect seen in stars (including the Sun) and planets, where the central part of the disk appears brighter than the edge, or...

The BMW VI was a water-cooled V-12 aircraft engine built in Germany in the 1920s. It was one of the most important German aero engines in the years leading...

M-Bus or Meter-Bus is a European standard (EN 13757-2 physical and link layer, EN 13757-3 application layer) for the remote reading of water, gas or electricity...

An erdstall is a type of tunnel found across Europe. They are of unknown origin but are believed to date from the Middle Ages. A variety of purposes have...

The Whole Internet User's Guide and Catalog, by Ed Krol, was published in September 1992 by O'Reilly. The Los Angeles Times notes that the Whole Internet...

The Markranstädter Automobilfabrik is a former producer of automobiles from Markranstädt, Germany, which was active between 1909 and 1923. Hugo Ruppe founded...

The forward–backward algorithm is an inference algorithm for hidden Markov models which computes the posterior marginals of all hidden state variables...