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In geometry, a tetrahedral prism is a convex uniform 4-polytope. This 4-polytope has 6 polyhedral cells: 2 tetrahedra connected by 4 triangular prisms. It has 14 faces: 8 triangular and 6 square. It has 16 edges and 8 vertices. It is one of 18 uniform polyhedral prisms created by using uniform prisms to connect pairs of parallel Platonic solids ...
The Irish Mob (also known as the Irish mafia or Irish organized crime) is a usually crime family –based ethnic collective of organized crime syndicates composed of primarily ethnic Irish members which operate primarily in Ireland, the United States, the United Kingdom, Canada and Australia, and have been in existence since the early 19th century.
April 23 ( Saint George's Day) – English Civil War: one hundred and fifty Irish soldiers bound for service with King Charles I of England are captured at sea by Parliamentarians and killed at Pembroke in Wales. October 27 – Catholic Bishop Malachy Ó Caollaidhe is killed by Scottish forces during a Confederate expedition to Sligo.
This picture shows clockwise from top left: An Arithmometer, a Comptometer, a Dalton adding machine, a Sundstrand, and an Odhner Arithmometer. A mechanical calculator, or calculating machine, is a mechanical device used to perform the basic operations of arithmetic automatically, or (historically) a simulation such as an analog computer or a ...
K correction. K correction converts measurements of astronomical objects into their respective rest frames. The correction acts on that object's observed magnitude (or equivalently, its flux ). Because astronomical observations often measure through a single filter or bandpass, observers only measure a fraction of the total spectrum, redshifted ...
Augmented hexagonal prism. In geometry, the augmented hexagonal prism is one of the Johnson solids ( J54 ). As the name suggests, it can be constructed by augmenting a hexagonal prism by attaching a square pyramid ( J1) to one of its equatorial faces. When two or three such pyramids are attached, the result may be a parabiaugmented hexagonal ...
Free-air gravity anomaly. In geophysics, the free-air gravity anomaly, often simply called the free-air anomaly, is the measured gravity anomaly after a free-air correction is applied to account for the elevation at which a measurement is made. It does so by adjusting these measurements of gravity to what would have been measured at a reference ...
The Puerto Rico Department of Correction and Rehabilitation ( Departamento de Corrección y Rehabilitación de Puerto Rico) is the law enforcement executive department of the government responsible for structuring, developing, and coordinating the public policies in Puerto Rico, an unincorporated territory of the U.S.