Blue

Blue is the colour between violet and green on the optical spectrum of visible light. Human eyes perceive blue when observing light with a wavelength between 450 and 495 nanometres. Blues with a higher frequency and thus a shorter wavelength gradually look more violet, while those with a lower frequency and a longer wavelength gradually appear more green. Pure blue, in the middle, has a wavelength of 470 nanometres. In painting and traditional colour theory, blue is one of the three primary colours of pigments, along with red and yellow, which can be mixed to form a wide gamut of colours. Red and blue mixed together form violet, blue and yellow together form green. Blue is also a primary colour in the RGB colour model, used to create all the colours on the screen of a television or computer monitor.

The modern English word blue comes from Middle English bleu or blewe, from the Old French bleu, a word of Germanic origin, related to the Old High German word blao. The clear sky and the deep sea appear blue because of an optical effect known as Rayleigh scattering. When sunlight passes through the atmosphere, the blue wavelengths are scattered more widely by the oxygen and nitrogen molecules, and more blue comes to our eyes. Rayleigh scattering also explains blue eyes; there is no blue pigment in blue eyes. Distant objects appear more blue because of another optical effect called atmospheric perspective.

Blue (tourism magazine)

Blue was an adventure travel magazine, founded in 1997 by Amy Schrier, with David Carson as the original design consultant. Its focus was on global adventure travel. It was published in New York and is now out of print; its last issue was February–March 2000.

The cover of its first issue was included in a list of the Top 40 magazine covers of the last 40 years by the American Society of Magazine Editors. In 1999 Life magazine listed it in the Best Magazine Photos of the Year. The New York Times characterized it as "not your father's National Geographic."

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Blue Gender

Blue Gender (Japanese: ブルージェンダー, Hepburn: Burū Jendā) is a 26-episode anime created, co-directed and co-written by Ryōsuke Takahashi (of Armored Trooper Votoms and Gasaraki fame) broadcast in Japan from 1999-2000. Blue Gender was created by the Japanese animation studio, AIC and is distributed in the United States by Funimation Entertainment. In 2003, Blue Gender was released on American television as part of Cartoon Network's Adult Swim, though it had originally been planned for Toonami, and was thus edited to remove its graphic violence, nudity, and sex scenes (however, its airing on Colours TV and Funimation Channel in the United States). There is also a compilation movie (Blue Gender: The Warrior) available on DVD with an alternative ending. The series was also shown on the Sci Fi Channel in the UK in 2002-2003. The Blue Gender series is set in the 2030s, in which Earth has been overrun by the Blue, which are mutated insect-like creatures containing a newly evolved B-cell that recently appeared in several humans, including the main protagonist, Yuji Kaido, that kill and harvest humans for food. Most of the surviving human race has moved to Second Earth, a huge space station that orbits the planet. The series mostly focuses on Yuji and Marlene's relationship as they work together to reach Second Earth and their participation in military combat operations against the Blue.

Blue (LeAnn Rimes album)

Blue is the debut album by American country singer LeAnn Rimes, released in the United States on July 9, 1996 by Curb Records. It reached No. 3 on Billboard 200, and No. 1 on Top Country Albums.

Singles released from this album include, in order of release: "Blue", "Hurt Me", "One Way Ticket (Because I Can)", "Unchained Melody" and "The Light in Your Eyes". These songs all charted on Billboard Hot Country Songs charts between 1996 and 1997; "Blue" and "The Light in Your Eyes" both reached top 10, while "Hurt Me" fell short off top 40. "One Way Ticket" is Rimes's only No. 1 hit on the country music charts.

When purchased at Target stores during the 1996 Christmas season, the album included a bonus single of "Put a Little Holiday in Your Heart", with "Unchained Melody" on the B-side. "Unchained Melody" peaked at number three on the Country Songs chart while "Put a Little Holiday in Your Heart" peaked at number fifty-one on the same chart in 1997.

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Greeks (finance)

In mathematical finance, the Greeks are the quantities representing the sensitivity of the price of derivatives such as options to a change in underlying parameters on which the value of an instrument or portfolio of financial instruments is dependent. The name is used because the most common of these sensitivities are denoted by Greek letters (as are some other finance measures). Collectively these have also been called the risk sensitivities,risk measures or hedge parameters.

Use of the Greeks

The Greeks are vital tools in risk management. Each Greek measures the sensitivity of the value of a portfolio to a small change in a given underlying parameter, so that component risks may be treated in isolation, and the portfolio rebalanced accordingly to achieve a desired exposure; see for example delta hedging.

The Greeks in the Black–Scholes model are relatively easy to calculate, a desirable property of financial models, and are very useful for derivatives traders, especially those who seek to hedge their portfolios from adverse changes in market conditions. For this reason, those Greeks which are particularly useful for hedging—such as delta, theta, and vega—are well-defined for measuring changes in Price, Time and Volatility. Although rho is a primary input into the Black–Scholes model, the overall impact on the value of an option corresponding to changes in the risk-free interest rate is generally insignificant and therefore higher-order derivatives involving the risk-free interest rate are not common.

Color (manga)

Color is a Japanese manga anthology written and illustrated by Taishi Zaou and Eiki Eiki. Color was serialized in Dear+, a magazine known for its romantic and non-explicit boys love manga published by Shinshokan, and a tankōbon collecting the chapters released in February 1999.Color is licensed in North America by Digital Manga Publishing which released the manga in June 2009. It is licensed in France by Asuka and in Germany by Egmont Manga.

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8-bit color

8-bit color graphics is a method of storing image information in a computer's memory or in an image file, such that each pixel is represented by one 8-bit byte. The maximum number of colors that can be displayed at any one time is 256.

There are two forms of 8-bit color graphics. The most common uses a separate palette of 256 colors, where each of the 256 entries in the palette map is given red, green, and blue values. In most color maps, each color is usually chosen from a palette of 16,777,216 colors (24 bits: 8 red, 8 green, 8 blue). But in the original VGA card's 320x200 mode, 256 on-screen colors could be chosen from a palette of 262,144 colors (18 bits: 6 red, 6 green, 6 blue). Some older cards prior to the VGA (like the Professional Graphics Controller) can only choose the 256-color palette from 4,096 colors (12 bits: 4 red, 4 green, 4 blue).

The other form is where the 8 bits directly describe red, green, and blue values, typically with 3 bits for red, 3 bits for green and 2 bits for blue. This second form is often called 8-bit truecolor, as it does not use a palette at all, and is thus more similar to the 15-bit, 16-bit, and 24-bit truecolor modes.