During the talk he spilled the beans on the quartz crystal hanging off the front side of every PCB. Continue reading “DEF CON 27: The Badge Talk; Or That One Time Joe Grand Sourced 30,000 ...

More than one of our readers suggested we highlight this beautifully-shot process documentary about the laborious and precise manufacturing of piezoelectric quartz crystals in the early 1940s.

A slice of quartz ground to a prescribed thickness that vibrates at a steady frequency when stimulated by electricity. The tiny crystal, about 1/20th by 1/5th of an inch, creates the computer's ...

Dhanteras gifting traditions now include crystals for their unique energies, symbolism, and meanings beyond material value. Popular choices include rose quartz for love, citrine for prosperity ...