Early radio equipment relied upon tuned or L-C ... Every step of the way, from raw, freshly-mined quartz crystal to mil-spec engineered crystal units, these minerals are sorted, inspected ...

Shortly after, the twin post-war explosions of radio and telephone increased the demand for quartz crystal oscillators. Almost all of the quartz needed for these components was harvested from ...

NASA’s Perseverance rover has uncovered high-purity quartz crystals on Mars, a discovery that could reshape the search for ...