Search Results for: Mineral substances articles
( latin : substantia eburnea) is a calcified tissue of the body and, along with enamel , cementum , and pulp , is one of the four major components of teeth . it is usually covered by enamel on the crown and cementum on the root and surrounds the entire pulp. by volume, % of dentin consists of the mineral
, % is organic material, and % is water. [ ] yellow in appearance, it greatly affects the color of a tooth due to the translucency of enamel. dentin, which is less mineralized and less brittle than enamel, is necessary for the support of enamel. [ ] dentin rates approximately on the mohs scale of mineral...
https://en.wikipedia.org/wiki/Dentin
spinning wheel , introduced to europe circa , improved the speed of cotton spinning. [ ] by the th century, venice , antwerp , and haarlem were important ports for cotton trade, and the sale and transportation of cotton fabrics had become very profitable. [ ] early modern period mughal india main articles
bales), which rose to $ million by , primarily due to the loss of the confederate supply on the world market. exports continued to grow even after the reintroduction of us cotton, produced now by a paid workforce, and egyptian exports reached million bales a year by . britain east india company main articles...
https://en.wikipedia.org/wiki/Cotton