4 ms·
Generally accurate to dozens or hundreds of parts per million. A few seconds gain or lost per month. Piezoelectric crystals work on much the same principle as
by retrac 5y ago
Generally accurate to dozens or hundreds of parts per million. A few seconds gain or lost per month. Piezoelectric crystals work on much the same principle as pendulums and tuning forks. They are precise shape and size, and they will oscillate very, very accurately. They actually look like miniature tuning forks. As to how they're made, the crystal is cut with a laser until it matches a reference source.
https://en.wikipedia.org/wiki/Quartz_clock https://en.wikipedia.org/wiki/Quartz_clock
- downrightmike 5y agoPower of twos math: quartz crystal oscillate at a frequency of 32768 (= 2^15) Hz and generate digital pulses once per second.
- News-Dog 5y ago'Tick, Tock goes the Clock' Quartz clock : https://en.wikipedia.org/wiki/Quartz_clock https://en.wikipedia.org/wiki/Quartz_clock Crystal Oscillator : https://en.wikipedia.org/wiki/Crystal_oscillator https://en.wikipedia.org/wiki/Crystal_oscillator Phase-Locked Loop (PLL) : https://en.wikipedia.org/wiki/Phase-locked_loop https://en.wikipedia.org/wiki/Phase-locked_loop Ceramic Resonator : https://en.wikipedia.org/wiki/Ceramic_resonator https://en.wikipedia.org/wiki/Ceramic_resonator Atomic Clock : https://en.wikipedia.org/wiki/Atomic_clock https://en.wikipedia.org/wiki/Atomic_clock Rubidium Standard : https://en.wikipedia.org/wiki/Rubidium_standard https://en.wikipedia.org/wiki/Rubidium_standard