A Japanese quartz movement is a mechanism for keeping time based upon the regular vibration of tiny section of quartz crystal. The "Japanese" part of the name refers to where the mechanism was manufactured, not where the crystal originated from.Know More
All watches and watches need a regularly moving object, called an oscillator, to ensure that the time they are keeping does not become erratic. A familiar example is the swinging pendulum of a grandfather clock. Clockwork-based watches use physical levers, springs and cogs working together to produce regular and precise rotation of the hands around the face of the watch.
Quartz watches do not need the elaborate physical parts of clockwork watches. Their oscillator is not a pendulum or spring, but the quartz crystal itself. The crystal vibrates in response to a small electric charge constantly applied to it. Scientists call the vibration the piezoelectric effect, and the amount of vibration can be very precisely known, allowing for extremely accurate time-keeping.
The vibrations of the crystal send pulses to a circuit which count them and make the hands of the watch turn. Because no mechanical parts are ensuring the watch keeps time, watches with quartz mechanisms do not need to be wound.Learn more about Jewelry & Watches
"Swiss quartz movement" refers to a clock or watch with a movement (the part of the watch that moves the hands) that is made in Switzerland and uses quartz. Quartz watches operate on batteries, rather than having to being wound. A watch with Swiss quartz movement may have been assembled in a country other than Switzerland.Full Answer >
The Encyclopedia of Arkansas explains that commercial mining of quartz is rare and occasionally consists of the use of explosives to first expose the quartz, followed by the operation of small hand tools such as chisels and rock picks to extract portions of the mineral from a quarry. Quartz is quite sensitive to temperature changes, so miners prefer not to use explosives unless absolutely necessary.Full Answer >
A wrist corsage is traditionally worn on the left hand. It is a small bouquet of flowers attached to a stretchy wristband.Full Answer >
Someone who wants to remove heavy tarnish from silver plated costume jewelry should combine aluminum tin foil, water and salt, then place the jewelry inside the solution. Other types of costume jewelry require a different approach.Full Answer >