Watch
![]() :In naval parlance, watches are a timekeeping convention. The term in general use can mean any period of duty or responsibility, such as a hurricane watch. ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
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~ ~ ~ ~ ~ ~ ~ ~ ~ ~ A watch is a small portable clock that displays the current time and sometimes the current day, date, month and year. In modern times they are usually worn on the wrist with a watch-strap (made of e.g. leather, metal, or nylon), although before the 20th century most were pocket watches, which had covers and were carried separately, often in a pocket, and hooked to a watch chain. ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ Current watches are often digital watches, using a piezoelectric crystal, usually quartz, as an oscillator (see quartz clock). ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ In earlier times mechanical timepieces were used, powered by a spring wound regularly by the user. The invention of "Automatic" or "Self-Winding" watches allowed for a constant winding without special action from the wearer: it works by an eccentric weight, called a winding rotor, that rotates to the movement of the wearer's body. The back-and-forth motion of the winding rotor couples to a rachet to automatically wind the watch. ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ Watches may be collectible; they are often made of precious metals, and can be considered an article of jewelry. ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
Naval: Redirect Navy... Watches: REDIRECT Watch... Hurricane watch: redirect Tropical cyclone warnings and watches#Hurricanes... Watch related Images and Photos (experimental)
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~ Related Subjects ~Quartz (1) - Oscillator (1) - Wrist (1) - Piezoelectric (1) - Quartz clock (1) - Collectible (1) - Jewelry (1) - Spring (1) - Rachet (1) - Hurricane watch (1) - Clock (1) - Naval (1) - Watches (1) - Time (1) - Month (1) -~ Community ~
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