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Quartz clocks and quartz watches are timepieces that use an electronic oscillator regulated by a quartz crystal to keep time. This crystal oscillator creates a signal with very precise frequency, so that quartz clocks and watches are at least an order of magnitude more accurate than mechanical clocks. Generally, some form of digital logic ...
Jordan Chiles' Olympic bronze medal saga continued on Sunday, with USA Gymnastics officially appealing the ruling. Chiles, who won bronze during individual floor finals after her coach Cecile ...
Catarratto. Catarratto is a white Italian wine grape planted primarily in Sicily where it is the most widely planted grape. Catarratto can make full bodied wines with lemon notes. [1] In the Etna DOC, the grape is often blended with Minella bianca and Carricante. [2]
Carrara marble, or Luna marble (marmor lunense) to the Romans, is a type of white or blue-grey marble popular for use in sculpture and building decor. It has been quarried since Roman times in the mountains just outside the city of Carrara in the province of Massa and Carrara in the Lunigiana, the northernmost tip of modern-day Tuscany, Italy.
A 1930s poster from the Work Projects Administration promoting oral hygiene. Tooth decay is the most common global disease. [14] Over 80% of cavities occur inside fissures in teeth where brushing cannot reach food left trapped after eating and saliva and fluoride have no access to neutralize acid and remineralize demineralized teeth, unlike easy-to-clean parts of the tooth, where fewer ...
Updated September 4, 2024 at 11:08 AM. The National Hurricane Center is tracking three tropical waves in the Atlantic Ocean that could become tropical depressions later this week. The NHC said in ...
Quartz is a hard, crystalline mineral composed of silica (silicon dioxide). The atoms are linked in a continuous framework of SiO 4 silicon–oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall chemical formula of SiO 2. Quartz is, therefore, classified structurally as a framework silicate mineral and ...
Lindsey Graham visits Nebraska on behalf of Trump campaign to push for electoral vote change