quartz clock

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quartz clock

[′kwȯrts ¦kläk]
(horology)
A clock using the piezoelectric property of a quartz crystal, in which the crystal is introduced into an oscillating electric circuit having a frequency nearly equal to the natural frequency of vibration of the crystal.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
The company debuted its quartz watch, which was accurate to A 10 seconds per month, in 1973, and in 1975, it brought out the Crystron Mega, the world's first quartz watch accurate to A 3 seconds per year.
Thus, as shown in table 3, in 1988-86 HMT's total watch production stood at 4.53 million, of which mechanical watches made up 96 percent, but quartz watches numbered a mere 160,000, or 4 percent of total production.
The watch is designed to receive standard time radio-waves from four stations including Europe, U.S.A., Japan (east and west) and China, while for other regions, the user can also use the model as a normal Eco-Drive quartz watch.
For a while, the watchmaking profession seemed done in by the "quartz revolution." In 1969, Seiko introduced the first quartz watch with hands, and in 1972 came the Hamilton Pulsar--the first watch with a digital display.
Citizen Leveraged its expertise in precision manufacturing and microelectronics with a commitment to technological innovation to produce a long line of firsts in timepieces, including the first waterproof and electronic watches, the first analog quartz watch, the first analog solar battery watch and the world's thinnest movement at .98 mm.
So the Swiss ignored the quartz watch and left it to high-tech companies such as Texas Instruments and Seiko.
The analog quartz watch, priced at 28,000 yen, incorporates a small globe about 2 centimeters in diameter and indicates time with an earth-dial (a dome-shaped 24-hour hand), a position indicator, and a minute hand.
"Mechanical watches are a reflection of uniqueness, tradition, quality, pride in ownership, consummate skill in design, construction and assembly that a quartz watch can never achieve," writes one.
The explosive device -- an M67 bomb of American make, rigged to a quartz watch and battery-operated timer, but rendered harmless by the absence of gunpowder -- was found by workers emptying a trash bin outside the Fiamma Cinema, a twinplex where the Spielberg film had recently opened.