Hip hop

Hip hop or hip-hop is a sub-cultural movement that formed during the early 1970s by African-American and Puerto Rican youths residing in the South Bronx in New York City. It became popular outside of the African-American community in the late 1980s and by the 2000s became the most listened-to musical genre in the world. It is characterized by four distinct elements, all of which represent the different manifestations of the culture: rap music (oral), turntablism or DJing (aural), b-boying (physical) and graffiti art (visual). Even while it continues to develop globally in myriad styles, these four foundational elements provide coherence to hip hop culture. The term is often used in a restrictive fashion as synonymous only with the oral practice of rap music.

The origin of the hip hop culture stems from the block parties of the Ghetto Brothers, when they plugged in the amplifiers for their instruments and speakers into the lampposts on 163rd Street and Prospect Avenue and used music to break down racial barriers, and from DJ Kool Herc at 1520 Sedgwick Avenue, where Herc mixed samples of existing records with his own shouts to the crowd and dancers. Kool Herc is credited as the "father" of hip hop. DJ Afrika Bambaataa of the hip hop collective Zulu Nation outlined the pillars of hip hop culture, to which he coined the terms: MCing or "Emceein", DJing or "Deejayin", B-boying and graffiti writing or "Aerosol Writin".

Hip hop music

Hip hop music, also called hip-hop or rap music, is a music genre formed in the United States in the 1970s that consists of a stylized rhythmic music that commonly accompanies rapping, a rhythmic and rhyming speech that is chanted. It developed as part of hip hop culture, a subculture defined by four key stylistic elements: MCing/rapping, DJing/scratching, break dancing, and graffiti writing. Other elements include sampling (or synthesis), and beatboxing.

While often used to refer to rapping, "hip hop" more properly denotes the practice of the entire subculture. The term hip hop music is sometimes used synonymously with the term rap music, though rapping is not a required component of hip hop music; the genre may also incorporate other elements of hip hop culture, including DJing, turntablism, and scratching, beatboxing, and instrumental tracks.

Hip-hop dance

Hip-hop dance refers to street dance styles primarily performed to hIP HOP or that have evolved as part of hip-hop culture. It includes a wide range of styles primarily breaking, locking, and popping which were created in the 1970s and made popular by dance crews in the United States. The television show Soul Train and the 1980s films Breakin', Beat Street, and Wild Style showcased these crews and dance styles in their early stages; therefore, giving hip-hop mainstream exposure. The dance industry responded with a commercial, studio-based version of hip-hop—sometimes called "new style"—and a hip-hop influenced style of jazz dance called "jazz-funk". Classically trained dancers developed these studio styles in order to create choreography from the hip-hop dances that were performed on the street. Because of this development, hip-hop dance is practiced in both dance studios and outdoor spaces.

The commercialization of hip-hop dance continued into the 1990s and 2000s with the production of several television shows and movies such as The Grind, Planet B-Boy, Rize, StreetDance 3D, America's Best Dance Crew, Saigon Electric, the Step Up film series, and The LXD, a web series. Though the dance is established in entertainment, including mild representation in theater, it maintains a strong presence in urban neighborhoods which has led to the creation of street dance derivatives Memphis jookin, turfing, jerkin', and krumping.

Overclocking

Overclocking is the configuration of a computer hardware component to operate at a faster rate than was certified by the original manufacturer, generally specified as a given clock frequency in Megahertz (MHz) or Gigahertz (GHz). Commonly the operating voltage of the overclocked device is also increased, which can help with maintaining the component's operational stability at the accelerated speeds. However, a given semiconductor device will generate more heat when operated at higher frequencies and voltages, so most overclocking attempts will increase power consumption and heat as well. The overclocked device may be unreliable or fail completely if the additional heat load is not removed, or if the supporting power delivery components cannot handle the increased power demands.

Overview

OC

Oc or OC may refer to:

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Oregon and California Railroad

The Oregon and California Railroad was formed from the Oregon Central Railroad when it was the first to operate a 20-mile (32 km) stretch south of Portland in 1869. This qualified the Railroad for land grants in California, whereupon the name of the railroad soon changed to Oregon & California Rail Road Company. In 1887, the line was completed over Siskiyou Summit, and the Southern Pacific Railroad assumed control of the railroad, although it was not officially sold to Southern Pacific until January 3, 1927.

Land grants and growth

As part of the U.S. government's desire to foster settlement and economic development in the western states, in July 1866, Congress passed the Oregon and California Railroad Act, which made 3,700,000 acres (1,500,000 ha) of land available for a company that built a railroad from Portland, Oregon to San Francisco, distributed by the state of Oregon in 12,800-acre (5,200 ha) land grants for each mile of track completed. Two companies, both of which named themselves the Oregon Central Railroad, began a competition to build the railroad, one on the west side of the Willamette River and one on the east side. The two lines would eventually merge and reorganize as the Oregon and California Railroad.