Four-vector — In relativity, a four vector is a vector in a four dimensional real vector space, called Minkowski space. It differs from a vector in that it can be transformed by Lorentz transformations. The usage of the four vector name tacitly assumes that… … Wikipedia
Four Seasons of Love — Infobox Album | Name = Four Seasons of Love Type = Album Artist = Donna Summer Released = October 11, 1976 Recorded = 1976 Genre = Disco/R B Length = 32:23 Label = Casablanca Producer = Giorgio Moroder, Pete Bellotte Reviews = Allmusic Rating|3|5 … Wikipedia
Four-Power Authorities — Following the defeat of Nazi Germany and then the partition of German territory, two Four Power Authorities, in which all 3 of the conquering forces (The United States, the United Kingdom, and the Soviet Union) and another country, France,… … Wikipedia
Four-gradient — The four gradient is the four vector generalization of the gradient::partial alpha stackrel{mathrm{def{=} left(frac{1}{c} frac{partial}{partial t}, abla ight)and is sometimes also represented as D .The square of D is the four Laplacian, which is… … Wikipedia
Four-stroke engine — Four stroke cycle used in gasoline/petrol engines. The right blue side is the intake and the left yellow side is the exhaust. The cylinder wall is a thin sleeve surrounded by cooling liquid. A video montage of the Otto engines running at the… … Wikipedia
Two and a Half Men — Genre Sitcom Created by Chuck Lorre Lee Aronsohn … Wikipedia
Two-wheel tractor — in Italy (2008) Two wheel tractor or walking tractor are generic terms understood in the USA and in parts of Europe to represent a single axle tractor, which is a tractor with one axle, self powered and self propelled, which can pull and power… … Wikipedia
Four Times of the Day — is a series of four paintings by English artist William Hogarth. Completed in 1736, they were reproduced as a series of four engravings published in 1738. They are humorous depictions of life in the streets of London, the vagaries of fashion, and … Wikipedia
Four Plays in One — Four Plays, or Moral Representations, in One is a Jacobean era stage play, one of the dramatic works in the canon of John Fletcher and his collaborators. Initially published in the first Beaumont and Fletcher folio of 1647, the play is notable… … Wikipedia
Four Mile Tree — is the name of a plantation near Jamestown, Virginia. Encompassing two thousand acres (8 km²), it was situated on the south side of the James River opposite Jamestown, four miles further north. On a hill near the water s edge a handsome old house … Wikipedia
Four Star Television — Four Star Television, also called Four Star Films, Four Star Productions, and Four Star International, was an American television production company which operated from 1952 to 1989. It was formed by prominent Hollywood actors Dick Powell, David… … Wikipedia
