Eye color

Eye color or eye colour is a polygenic phenotypic character determined by two distinct factors: the pigmentation of the eye's iris and the frequency-dependence of the scattering of light by the turbid medium in the stroma of the iris.

In humans, the pigmentation of the iris varies from light brown to black, depending on the concentration of melanin in the iris pigment epithelium (located on the back of the iris), the melanin content within the iris stroma (located at the front of the iris), and the cellular density of the stroma. The appearance of blue and green, as well as hazel eyes, results from the Tyndall scattering of light in the stroma, a phenomenon similar to that which accounts for the blueness of the sky called Rayleigh scattering. Neither blue nor green pigments are ever present in the human iris or ocular fluid. Eye color is thus an instance of structural color and varies depending on the lighting conditions, especially for lighter-colored eyes.

The brightly colored eyes of many bird species result from the presence of other pigments, such as pteridines, purines, and carotenoids. Humans and other animals have many phenotypic variations in eye color. The genetics of eye color are complicated, and color is determined by multiple genes. So far, as many as 15 genes have been associated with eye color inheritance. Some of the eye-color genes include OCA2 and HERC2. The earlier belief that blue eye color is a simple recessive trait has been shown to be incorrect. The genetics of eye color are so complex that almost any parent-child combination of eye colors can occur. However, OCA2 gene polymorphism, close to proximal 5′ regulatory region, explains most human eye-color variation.

Yo Yo

Yo Yo is a 1965 film by Pierre Étaix. It was entered into the 1965 Cannes Film Festival.

Plot

Yo Yo is the son of a 1920s billionaire who, although having everything he fancies and living in a cavernous old castle, is not happy, fancying the simple life of a beautiful circus actress. When the stock-exchange crashes, rendering him both poor and free. Thus, he joins the circus where his love interest is performing, and fall madly in love. They have a son who starts in the circus as a clown, but later becomes a successful actor star and uses his new wealth to buy back his father's castle.

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Yo Yo Honey Singh

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Hirdesh Singh (born 15 March 1983), better known by his stage name Yo Yo Honey Singh or Honey Singh is an Indian people rapper, music producer, singer and film actor. He started as a session and recording artist, and became a Bhangra music producer. He has also begun to produce music for Bollywood films, and gone on to become one of the highest-paid music producers in Bollywood.

Early life

Singh was born on 15 March 1983 at Hoshiarpur, Punjab to a Sikh family. His birth name is Hirdesh Singh. He studied music at the Trinity School in the United Kingdom. Later on, his family moved to Delhi.

Personal life

Singh is married to Shalini Talwar Singh, whom he introduced to audience for first time on India's Raw Star TV show.

Promotion

Singh and Diljit Dosanjh's song Lak 28 Kudi Da reached No 1 in BBC Asian Download Charts in May 2011. The song was released a promotional track for Diljit Dosanjh's film Lion of Punjab.

Wise

Wise may refer to:

People

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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.