pH is the measure of acidity or alkalinity of a substance. On a scale of 0-14, 7 is neutral (neither acid nor alkaline). Lower than 7 is acidic (gives up a hydrogen atom when added to water) and...
Hemp is currently being used by designers in clothing. When thinking of hemp, the illegal plant, marijuana comes to mind. No, hemp fabric does not contain the narcotic chemical that, when smoked...
The term comes from the Spanish word toca. A toque is a type of hat with a narrow brim or no brim at all. They were popular during the 13th-16th century in Europe, especially in France. One toque...
A general classification of strong, firm, closely woven fabrics usually made with cotton. A heavier, open weave comprised of plied yarns (a number of single yarns, usually three, twisted together)....
A machine in which heavy bowls rotate in contact under mechanical pressure.
NOTE:
The bowls may be unheated or one may be a thick-walled steel shell heated internally. All bowls may rotate at the...