system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How are all digital clocks and watches made with such precision to always measure the same length of second?
gpt
Clocks and watches have a not so special stone called quartz. When you zap the stone with electricity they wiggle about. We figured out that when you zap the stone it wiggles precisely 32768 times in one second. So we count how many times it wiggles, and once we hit 32768 we send some more electricity to the part of the watch that changes the display and moves time forward.