A Cartesian coordinate system is a coordinate system that specifies each point uniquely in a plane by a set of numerical coordinates, which are the signed distances to the point from two fixed perpendicular oriented lines, measured in the same unit of length. Each reference line is called a coordinate axis or just axis of the system, and the point where they meet is its origin, at ordered pair (0, 0). The coordinates can also be defined as the positions of the perpendicular projections of the point onto the two axes, expressed as signed distances from the origin.
The kilogram or kilogramme is the base unit of mass in the International System of Units (SI). Until 20 May 2019, it remains defined by a platinum alloy cylinder, the International Prototype Kilogram, manufactured in 1889, and carefully stored in Saint-Cloud, a suburb of Paris. After 20 May, it will be defined in terms of fundamental physical constants.
A nautical mile is a unit of measurement used in both air and marine navigation, and for the definition of territorial waters. Historically, it was defined as one minute of a degree of latitude. Today it is defined as exactly 1852 metres. The derived unit of speed is the knot, one nautical mile per hour.
The International System of Units is the modern form of the metric system, and is the most widely used system of measurement. It comprises a coherent system of units of measurement built on seven base units, which are the ampere, kelvin, second, metre, kilogram, candela, mole, and a set of twenty prefixes to the unit names and unit symbols that may be used when specifying multiples and fractions of the units. The system also specifies names for 22 derived units, such as lumen and watt, for other common physical quantities.
Topography is the study of the shape and features of land surfaces. The topography of an area could refer to the surface shapes and features themselves, or a description.
A platoon is a military unit typically composed of two or more squads/sections/patrols. Platoon organization varies depending on the country and the branch, but typically, per the official tables of organization as published in U.S. military documents; a full-strength U.S. infantry rifle platoon consists of 39 Soldiers or 43 Marines. There are other types of infantry platoons, depending upon service and type of infantry company/battalion to which the platoon is assigned, and these platoons may range from as few as 18 to 69. Non-infantry platoons may range from as small as a nine-man communications platoon to a 102-man maintenance platoon. A platoon leader or commander is the officer in command of a platoon. This person is usually a junior officer—a second or first lieutenant or an equivalent rank. The officer is usually assisted by a platoon sergeant. A platoon is typically the smallest military unit led by a commissioned officer.
A brigade is a major tactical military formation that is typically composed of three to six battalions plus supporting elements. It is roughly equivalent to an enlarged or reinforced regiment. Two or more brigades may constitute a division.
The French Air Force [aʀme də lɛʀ], literally Army of the Air) is the air force of the French Armed Forces. It was formed in 1909 as the Service Aéronautique, a service arm of the French Army, then was made an independent military arm in 1934. The number of aircraft in service with the French Air Force varies depending on source, however sources from the French Ministry of Defence give a figure of 658 aircraft in 2014. The French Air Force has 225 combat aircraft in service, with the majority being 117 Dassault Mirage 2000 and 108 Dassault Rafale. As of early 2017, the French Air Force employs a total of 41,160 regular personnel. The reserve element of the air force consisted of 5,187 personnel of the Operational Reserve.
STS-65 was a Space Shuttle program mission of Columbia launched from Kennedy Space Center, Florida, 8 July 1994. The flight was commanded by Robert D. Cabana who would go on later to lead the Kennedy Space Center.
In an organized sports league, a typical season is the portion of one year in which regulated games of the sport are in session: for example, in Major League Baseball the season lasts approximately from April to October. In other team sports, like association football or basketball, it is generally from August or September to May although in some countries - such as Northern Europe or East Asia - the season starts in the spring and finishes in autumn, mainly due to weather conditions encountered during the winter.
A single-elimination, knockout, or sudden death tournament is a type of elimination tournament where the loser of each match-up is immediately eliminated from the tournament. Each winner will play another in the next round, until the final match-up, whose winner becomes the tournament champion. Each match-up may be a single match or several, for example two-legged ties in European football or best-of series in American pro sports. Defeated competitors may play no further part after losing, or may participate in "consolation" or "classification" matches against other losers to determine the lower final rankings; for example, a third place playoff between losing semi-finalists. In a shootout poker tournament, there are more than two players competing at each table, and sometimes more than one progressing to the next round. Some competitions are held with a pure single-elimination tournament system. Others have many phases, with the last being a single-elimination final stage, often called playoffs.
The French Forces of the Interior refers to French resistance fighters in the later stages of World War II. Charles de Gaulle used it as a formal name for the resistance fighters. The change in designation of these groups to FFI occurred as France's status changed from that of an occupied nation to one of a nation being liberated by the Allied armies. As regions of France were liberated, the FFI were more formally organized into light infantry units and served as a valuable manpower addition to regular Free French forces. In this role, the FFI units manned less active areas of the front lines, allowing regular French army units to practice economy of force measures and mass their troops in decisive areas of the front. Finally, from October 1944 and with the greater part of France liberated, the FFI units were amalgamated into the French regular forces continuing the fight on the Western Front, thus ending the era of the French irregulars in World War II.
A bunder is a unit of area in the Low Countries.
Chilsu and Mansu is a 1988 South Korean film, and noted director Park Kwang-su's debut film. Though not a box-office hit, the film is remembered as a major step towards freedom of expression in South Korean cinema.
Diplomacy is a strategic board game created by Allan B. Calhamer in 1954 and released commercially in 1959. Its main distinctions from most board wargames are its negotiation phases and the absence of dice and other game elements that produce random effects. Set in Europe in the years leading to the Great War, Diplomacy is played by two to seven players, each controlling the armed forces of a major European power. Each player aims to move his or her few starting units and defeat those of others to win possession of a majority of strategic cities and provinces marked as "supply centers" on the map; these supply centers allow players who control them to produce more units. Following each round of player negotiations, each player can issue attack orders and take control of a neighboring province when the number of provinces adjacent to the attacking province that are given orders to support the attacking province exceeds the number of provinces adjacent to the province under attack that are given orders to support the province under attack.
The Cherry Creek Rockshelter is an archaeological site in central Colorado, located within modern-day Castlewood Canyon State Park near
Franktown, Colorado. Current research indicates that it was used by Native American inhabitants beginning in the Archaic period. The site is situated on the Palmer Divide, which allowed for a unique prehistoric environment that contributed to an abundance of food and water sources, as well as lithic materials for tool-making. These factors, combined with the structure and situation of the shelter itself, made the site a particularly attractive environment for prehistoric peoples to settle in. Archaeological study of the site began in 1955, with the most current original research concluding in 2002.
On 12 November 1975 a Provisional IRA bomb exploded without warning at Scott's Oyster Bar at Mount Street, Mayfair, London
