one of the commonest minerals, silicon dioxide, SiO2, having many varieties that differ in color, luster, etc., and occurring either in masses or in crystals: the chief constituent of sand and sandstone, and an important constituent of many other rocks. It is piezoelectric and used to control the frequencies of radio transmitters.
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By using a new technique, researchers were able to isolate and test tiny samples—like the piece seen here mounted inside a quartz cube—for magnetic evidence.
The material is produced through an energy-intensive process of reacting silica, or quartz, with carbon in electric furnaces at facilities like Hoshine’s in Piqan, also known as Shanshan county.
Gaia responded by inventing the atom, then the elements, and then from them she invented rock and quartz and flint.
Infrared heaters are very similar, using infrared quartz bulbs to generate radiating heat.
They heat up almost instantaneously using quartz or other metals and a reflector to direct heat, though some will implement a fan.
They measured the amount of different isotopes of xenon trapped in quartz crystals.
In 2008, NASA discovered crystals with a similar make-up to quartz surrounding young stars.
Composite fillings are typically made of glass or quartz mixed with resins and adhesives.
Quartz orange juice and rice with chicken and French fries for lunch and same for dinner.
The plan, however, remains in use to this day in many mines, and is frequently spoken of under the name of quartz-crusher.
A crushing machine, now called "quartz-crusher," also formed part of this additional order.
Quartz consists of pure silica, and when in large masses is one of the most indestructible rocks.
With the exception of quartz and augite, these names are, however, representatives of different classes of minerals.
In general, sand consists of finely broken crystals of silica or quartz.