- published: 24 Feb 2009
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The centerfold or centrefold of a magazine refers to a gatefolded spread, usually a portrait such as a pin-up or a nude, inserted in the middle of the publication, or to the model featured in the portrait. In saddle-stitched magazines (as opposed to those that are perfect-bound), the centerfold does not have any blank space cutting through the image.
The term was coined by Hugh Hefner, founder of Playboy magazine. The success of the first issue of Playboy has been attributed in large part to its centerfold: a nude of Marilyn Monroe. The advent of monthly centerfolds gave the pin-up a new respectability, and helped to sanitize the notion of "sexiness". Being featured as a centerfold could lead to film roles for models, and still occasionally does today.
Early on, Hefner required Playboy centerfolds to be portrayed in a very specific way, telling photographers in a 1956 memo that the "model must be in a natural setting engaged in some activity 'like reading, writing, mixing a drink'...[and]... should have a 'healthy, intelligent, American look—a young lady that looks like she might be a very efficient secretary or an undergrad at Vassar.'" Hefner later said that the ideal centerfold is one in which "a situation is suggested, the presence of someone not in the picture"; the goal was to transform "a straight pinup into an intimate interlude, something personal and special."
In everyday use and in kinematics, the speed of an object is the magnitude of its velocity (the rate of change of its position); it is thus a scalar quantity. The average speed of an object in an interval of time is the distance travelled by the object divided by the duration of the interval; the instantaneous speed is the limit of the average speed as the duration of the time interval approaches zero.
Like velocity, speed has the dimensions of a length divided by a time; the SI unit of speed is the metre per second, but the most common unit of speed in everyday usage is the kilometre per hour or, in the US and the UK, miles per hour. For air and marine travel the knot is commonly used.
The fastest possible speed at which energy or information can travel, according to special relativity, is the speed of light in a vacuum c = 7008299792458000000♠299792458 metres per second (approximately 7008299722222222222♠1079000000 km/h or 7008299963840000000♠671000000 mph). Matter cannot quite reach the speed of light, as this would require an infinite amount of energy. In relativity physics, the concept of rapidity replaces the classical idea of speed.
Mix, mixes, mixture, or mixing may refer to:
Fade or Fading may refer to: