Indigo is derived from the term Indicum (Latin) and Indikon (Greek) meaning “blue dye from India” or “Indian substance”. The term is coiled because India is to be believed the oldest centre of indigo dyeing in the Old World. It was the major commercial place for the supply of indigo across the Greco-Roman civilization. Nowadays, Indigo is frequently referred to as Indigo dye that has a distinctive blue colour. The dye is mostly extracted from Indigofera tinctorial and woad (Isatis tinctoria). Indigofera tinctoria is a common plant in the subtropics of Asian and Africa that produces more dye than woad, which can only be obtained in temperate climates. Indigo dye is one of the oldest natural known dyes mostly used for denim jeans, arts and crafts.

Indigo is the colour between blue and violet with a spectral wavelength of 440 and 420 nanometers. German chemist von Baeyer was the first person to determine the molecular structure for Indigo and was reward the Nobel Prize in......

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Title: Indigo
Approximate Word Count: 1166
Approximate Pages: 5 (250 words per double-spaced page)

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