Historically, this is called the quartz revolution. By the 1980s the quartz watch had taken over most of the market from the mechanical watch. In the 1960s the electronic quartz watch was invented, which was powered by a battery and kept time with a vibrating quartz crystal. During most of its history the watch was a mechanical device, driven by clockwork, powered by winding a mainspring, and keeping time with an oscillating balance wheel. The study of timekeeping is known as horology.Watches progressed in the 17th century from spring-powered clocks, which appeared as early as the 14th century. A pocket watch is designed for a person to carry in a pocket. A wristwatch is designed to be worn around the wrist, attached by a watch strap or other type of bracelet. It is designed to keep working despite the motions caused by the person's activities. A modern wristwatchA watch is a timepiece intended to be carried or worn by a person. From Wikipedia, the free encyclopedia Jump to navigation Jump to search For other uses, see Watch (disambiguation).
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