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Chemical structure of indigo dye, a widely produced blue dye. Blue jeans consist of 1–3% by weight of this organic compound. Chemical structure of C.I. Acid Blue 9, a dye commonly used in candies. Blue dyes are organic compounds, both synthetic and natural. [30] Woad and true indigo were once used but since the early 1900s, all indigo is ...
Two synthetic purple dyes were invented at about the same time. Cudbear is a dye extracted from orchil lichens that can be used to dye wool and silk , without the use of mordant . Cudbear was developed by Cuthbert Gordon of Scotland : production began in 1758, The lichen is first boiled in a solution of ammonium carbonate .
Ochre pigment. Ochre (/ ˈ oʊ k ər / OH-kər; from Ancient Greek ὤχρα (ṓkhra), from ὠχρός (ōkhrós) 'pale'), iron ochre, or ocher in American English, is a natural clay earth pigment, a mixture of ferric oxide and varying amounts of clay and sand. [1]
Aeneas tells Dido of the fall of Troy. (Guérin 1815)Carthage was founded by Phoenicians coming from the Levant.The city's name in Phoenician language means "New City". [6] There is a tradition in some ancient sources, such as Philistos of Syracuse, for an "early" foundation date of around 1215 BC – that is before the fall of Troy in 1180 BC; however, Timaeus of Taormina, a Greek historian ...
The illustration on folio 12v from the Vienna Genesis shows the story of Jacob Wrestling the Angel. Rebecca and Eliezer at the Well. The Vienna Genesis (Vienna, Österreichische Nationalbibliothek, cod. theol. gr. 31), designated by siglum L (Ralphs), is an illuminated manuscript, probably produced in Syria in the first half of the 6th century.
The color blue has been important in culture, politics, art and fashion since ancient times. Blue was used in ancient Egypt for jewelry and ornament. [1] In the Renaissance, blue pigments were prized for paintings and fine blue and white porcelain. in the Middle Ages, deep rich blues made with cobalt were used in stained glass windows. In the ...
These insects were used as a red dye since antiquity by the ancient Egyptians, Mesopotamians, Indians, Greeks, Romans, and Iranians. The dye also served a number of ritual and practical purposes in the Hebrew Bible. The kermes dye is a rich red, a crimson. It has good colour fastness in silk and wool.
At the time, all dyes used for colouring cloth were natural substances, many of which were expensive and labour-intensive to extract—and many lacked stability, or fastness. The colour purple, which had been a mark of aristocracy and prestige since ancient times, was especially expensive and difficult to produce.