Question

what means by quartz ?​

Answer 1

Answer:

Today, billions of quartz crystals are used to make oscillators for watches, clocks, radios, televisions, electronic games, computers, cell phones, electronic meters, and GPS equipment. A wide variety of uses have also been developed for optical-grade quartz crystals.

Explanation:

Answer 2

Answer:

The quart (symbol: qt) is an English unit of volume equal to a quarter gallon. ... Three kinds of quarts are currently used: the liquid quart and dry quart of the US customary system and the imperial quart of the British imperial system. All are roughly equal to one liter.