Black

Black is the darkest color, the result of the absence of or complete absorption of light. It is the opposite of white (the combined spectrum of color or light). It is an achromatic color, literally a color without color or hue. It is one of the four primary colors in the CMYK color model, along with cyan, yellow, and magenta, used in color printing to produce all the other colors.

Black was one of the first colors used by artists in neolithic cave paintings. In the 14th century, it began to be worn by royalty, the clergy, judges and government officials in much of Europe. It became the color worn by English romantic poets, businessmen and statesmen in the 19th century, and a high fashion color in the 20th century.

In the Roman Empire, it became the color of mourning, and over the centuries it was frequently associated with death, evil, witches and magic. According to surveys in Europe and North America, it is the color most commonly associated with mourning, the end, secrets, magic, force, violence, evil, and elegance.

White and Black in chess

In chess, the player who moves first is referred to as "White" and the player who moves second is referred to as "Black". Similarly, the pieces that each conducts are called, respectively, "the white pieces" and "the black pieces". The pieces are often not literally white and black, but some other colors (usually a light color and a dark color, respectively). The 64 squares of the chessboard, which is colored in a checkered pattern, are likewise referred to as "white squares" or "light squares" on the one hand, and "black squares" or "dark squares" on the other. In most cases, the squares are not actually white and black, but a light color and a contrasting dark color. For example, the squares on plastic boards are often off-white ("buff") and green, while those on wood boards are often light brown and dark brown.

In old chess writings, the sides are often called Red and Black, because those were the two colors of ink then commonly available when hand-drawing or printing chess position diagrams.

Black (2004 film)

Black: The Man From Darkness is a 2004 Indian Malayalam crime thriller film written and directed by Ranjith, and produced by Lal. It deals with the underworld operations in Kochi. Mammootty plays the role of Police Constable Karikkamuri Shanmugham, who ironically is a hit man and a contract killer. The film features cinematography by Amal Neerad. The film was a comeback for actor Rahman to Malayalam cinema. The film was a box office hit.

Plot

Black is based on the underground activities in the city of Kochi(Cochin). Shanmughan (Mammooty) plays a Head Police Constable but also a hitman who does his job with perfection. On the top of the underworld, there is a man, Advocate Devin Carlos Padaveedan (Lal). He and Shanmughan are accomplices.

A newly appointed police officer, Ashok (Rahman), tries to clean up the city from the criminals, but fails to do so as he is killed by Padaveedan. Shanmugan is not very happy about the death of Ashok, and creates some indifference between the friends. After Shanmugan finds his own daughter, he wants to live a peaceful life, but the transformation is not acceptable to Padaveedan, and he wants Shanmughan dead.

BET International

BET International (Black Entertainment Television) is a television channel in the UK, Ireland, Africa, and the Middle East. It was launched on 27 February 2008 in the UK with headquarters in London. BET broadcasts content from the main Black Entertainment Television channel in the US and Canada. In The UK, The Wendy Williams Show remins The most Watches show on The Channel. Wendy is also repeated several times the day after. The channel does not broadcast any locally produced shows.

History

BET International Inc was given a license to broadcast in the UK in May 2007 by Ofcom. In 2006 it was announced that BET would hold its first annual Hip-Hop Awards and as part of the announcement they also stated there would be a "Best UK Artist" category, the winner being Sway.

Availability

BET launched on the Sky platform in the UK on 27 February 2008, one day earlier than originally advertised. It began with various BET content, such as 106 & Park, American Gangster and College Hill. The channel is available on Sky 187 and a one hour timeshift channel is available on Sky 190. The channel launched on Freesat in August 2008, on channel 140. BET +1 was added to Freesat when it launched in late 2008. These signals are also available for free in the rest of Europe via satellite Eutelsat 28A.

Triethylborane

Triethylborane (TEB), also called triethylboron, is an organoborane (a compound with a B-C bond). It is a colorless pyrophoric liquid. Its chemical formula is (C₂H₅)₃B, abbreviated Et₃B. It is soluble in organic solvents tetrahydrofuran and hexane.

Preparation and structure

Triethylborane is prepared by the reaction of trimethyl borate with triethylaluminium:

The molecule is monomeric, unlike H₃B and Et₃Al, which tend to dimerize. It has a planar BC₃ core.

Applications

Turbojet engine

Triethylborane was used to ignite the JP-7 fuel in the Pratt & Whitney J58 turbojet/ramjet engines powering the Lockheed SR-71 Blackbird spy plane, and its predecessor A-12 OXCART. Triethylborane is suitable for this because of its pyrophoric properties, especially the fact that it burns with very high temperature. It was chosen as an ignition method for reliability reasons, and in the case of the Blackbird, because the JP-7 fuel has very low volatility and is difficult to ignite. Conventional ignition plugs posed too high risk of a malfunction. It was used to start up each engine and to light the afterburners.

BET-10

The Bucharest Exchange Trading index (BET or BET-10) was the first index developed by BVB. It is the reference index for the capital markets. BET follows the evolution of 10 most liquid companies listed on BVB regulated market, excluding financial investment companies (SIFs). It is an index weighted by free float capitalization. The maximum weight of the symbol is 20%. The main selection criterion is company’s liquidity. Starting with 2015, additional requirements of transparency, quality reporting and communication with investors will be imposed.

Constituents

BET index structure:

Updated February 12, 2016

See also

References

External links

Natasha (disambiguation)

Natasha is a name of Russian origin.

Natasha may also refer to: