A dye is a colored substance that chemically bonds to the substrate to which it is being applied. This distinguishes dyes from pigments which do not chemically bind to the material they color. Dye is generally applied in an aqueous solution, and may require a mordant to improve the fastness of the dye on the fiber.
Indigo is a deep color close to the color wheel blue, as well as to some variants of ultramarine, based on the ancient dye of the same name. The word "indigo" comes from the Latin for Indian as the dye was originally exported to Europe from India.
Purple is any of a variety of colors with hue between red and blue. In the RGB color model used in computer and television screens, purples are produced by mixing red and blue light. In the RYB color model historically used by painters, purples are created with a combination of red and blue pigments. In the CMYK color model used in printing, purples are made by combining magenta pigment with either cyan pigment, black pigment, or both.
Indigo dye is an organic compound with a distinctive blue color. Historically, indigo was a natural dye extracted from the leaves of some plants of the Indigofera genus, in particular Indigofera tinctoria; dye-bearing Indigofera plants were commonly grown and used throughout the world, in Asia in particular, as an important crop, with the production of indigo dyestuff economically important due to the previous rarity of some blue dyestuffs historically.
Denim is a sturdy cotton warp-faced textile in which the weft passes under two or more warp threads. This twill weaving produces a diagonal ribbing that distinguishes it from cotton duck. While a denim predecessor known as dungaree has been produced in India for hundreds of years, denim as it is recognized today was first produced in Nîmes, France.
Tyrian purple, also known as Phoenician red, Phoenician purple, royal purple, imperial purple, or imperial dye, is a reddish-purple natural dye; the name Tyrian refers to Tyre, Lebanon. It is a secretion produced by several species of predatory sea snails in the family Muricidae, rock snails originally known by the name 'Murex'. In ancient times, extracting this dye involved tens of thousands of snails and substantial labor, and as a result, the dye was highly valued. The main chemical is 6,6′-dibromoindigo.
Hair coloring, or hair dyeing, is the practice of changing the hair color. The main reasons for this are cosmetic: to cover gray or white hair, to change to a color regarded as more fashionable or desirable, or to restore the original hair color after it has been discolored by hairdressing processes or sun bleaching.
Tie-dye is a term used to describe a number of resist dyeing techniques and the resulting dyed products of these processes. The process of tie-dye typically consists of folding, twisting, pleating, or crumpling fabric or a garment, before binding with string or rubber bands, followed by the application of dye or dyes. The manipulations of the fabric before the application of dye are called resists, as they partially or completely prevent ('resist') the applied dye from coloring the fabric. More sophisticated tie-dye may involve additional steps, including an initial application of dye before the resist, multiple sequential dyeing and resist steps, and the use of other types of resists and discharge.
Dyeing is the application of dyes or pigments on textile materials such as fibers, yarns, and fabrics with the goal of achieving color with desired color fastness. Dyeing is normally done in a special solution containing dyes and particular chemical material. Dye molecules are fixed to the fiber by absorption, diffusion, or bonding with temperature and time being key controlling factors. The bond between dye molecule and fiber may be strong or weak, depending on the dye used. Dyeing and printing are different applications; in printing, color is applied to a localized area with desired patterns. In dyeing, it is applied to the entire textile.
Wayne Walter Dyer was an American self-help and spiritual author and a motivational speaker. His first book, Your Erroneous Zones (1976), is one of the best-selling books of all time, with an estimated 100 million copies sold to date.
Danial John Dyer is an English actor and presenter. Dyer's breakthrough role was as Moff in Human Traffic, with other notable roles as Billy the Limpet in Mean Machine and as Tommy Johnson in The Football Factory. Following the success of The Football Factory, Dyer was often typecast in "hard-man" roles, although it was this image that allowed him to present The Real Football Factories, its spin-off, The Real Football Factories International and Danny Dyer's Deadliest Men. Dyer has also worked in theatre, having appeared in three plays written by Harold Pinter, with whom he had a close friendship.
Bombay Dyeing & Manufacturing Company Limited is the flagship company of the Wadia Group, engaged primarily in the business of Textiles. Bombay Dyeing is one of India's largest producers of textiles.
The Jallianwala Bagh massacre, also known as the Amritsar massacre, took place on 13 April 1919. A large peaceful crowd had gathered at the Jallianwala Bagh in Amritsar, Punjab to protest against the arrest of pro-Indian independence leaders Dr. Saifuddin Kitchlew and Dr. Satya Pal. In response to the public gathering, the Anglo-Indian Brigadier R. E. H. Dyer surrounded the Bagh with British Indian army units. The Jallianwala Bagh could only be exited on one side, as its other three sides were enclosed by buildings. After blocking the exit with his troops, he ordered them to shoot at the crowd, continuing to fire even as the protestors tried to flee. The troops kept on firing until their ammunition was exhausted. Estimates of those killed vary between 379 and 1500+ people and over 1,200 other people were injured of whom 192 were seriously injured.
The cochineal is a scale insect in the suborder Sternorrhyncha, from which the natural dye carmine is derived. A primarily sessile parasite native to tropical and subtropical South America through North America, this insect lives on cacti in the genus Opuntia, feeding on plant moisture and nutrients. The insects are found on the pads of prickly pear cacti, collected by brushing them off the plants, and dried.
Mahishasuramarddini is a widely popular early Bengali special dawn radio programme that has been broadcasting since 1931 on All India Radio (AIR) in Indian state West Bengal. It is a one-and-a-half-hour audio montage of Chaṇḍipāaṭh recitation from the scriptural verses of Śrī Śrī Chaṇḍi or Durga Saptashati, Bengali devotional songs, classical music and a dash of acoustic melodrama. The program has been translated into Hindi set to similar orchestration and is broadcast at the same time for a pan-Indian audience. This programme is aired every year at day-break on Mahalaya. The programme, which started off as a live-performance, has been broadcast in its pre-recorded format since 1966. However, its great popularity remains undiminished even today over 89 years later.
Natural dyes are dyes or colorants derived from plants, invertebrates, or minerals. The majority of natural dyes are vegetable dyes from plant sources—roots, berries, bark, leaves, and wood—and other biological sources such as fungi.
Technicolor is a series of color motion picture processes, the first version dating to 1916, and followed by improved versions over several decades.
The molecular formula C6H4N2O2 may refer to:
Edward Malcolm Kosower is an American-Israeli chemist.
Krishna Dasgupta was a renowned Bengali classical singer and music teacher from West Bengal, India, who sang numerous songs in Bengali language movies and non-film as well, particularly during the 1950s, 60s and 70s. She is widely known for lending voice in Mahisasuramardini, the popular early Bengali special dawn radio programme that has been broadcast since 1931 on All India Radio (AIR) in West Bengal.
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