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21Europe, history of — Introduction history of European peoples and cultures from prehistoric times to the present. Europe is a more ambiguous term than most geographic expressions. Its etymology is doubtful, as is the physical extent of the area it designates.… …
22Textile processing — is one of the important industries related with textile manufacturing operations. This industry has a long history that begins with Indigo dyeing a natural color, derived from a plant. Once the process of coloring textiles was considered as an… …
23Berthollet, Claude-Louis — ▪ French chemist Introduction born Dec. 9, 1748, Talloires, Savoy, France died Nov. 6, 1822, Arcueil central French figure in the emergence of chemistry as a modern discipline in the late 18th century. He combined acute experimental skills… …
24agricultural technology — Introduction application of techniques to control the growth and harvesting of animal and vegetable products. Soil preparation Mechanical processing of soil so that it is in the proper physical condition for planting is usually… …
25Chlorine — This article is about the chemical element. For the bleach, see Sodium hypochlorite. For the upcoming film, see Chlorine (film). sulfur ← chlorine → argon F ↑ Cl ↓ Br …
26art conservation and restoration — Maintenance and preservation of works of art, their protection from future damage, deterioration, or neglect, and the repair or renovation of works that have deteriorated or been damaged. Research in art history has relied heavily on 20th and… …
27Gay-Lussac, Joseph-Louis — ▪ French scientist Introduction born December 6, 1778, Saint Léonard de Noblat, France died May 9, 1850, Paris French chemist and physicist who pioneered investigations into the behaviour of gases, established new techniques for analysis, and… …
28industrial glass — Introduction solid material that is normally lustrous and transparent in appearance and that shows great durability under exposure to the natural elements. These three properties lustre, transparency, and durability make glass a favoured… …
29Climate of India — …
30Textile manufacturing — is one of the oldest human industries. The oldest known textiles date back to about 5000 B.C. In order to make textiles, the first requirement is a source of fiber from which a yarn can be made, primarily by spinning. The yarn is processed by… …
