A stable oscillator is the heart of a clock
The more predictable the cycles, the more stable the timekeeping.
Quartz uses piezoelectricity
An electric circuit drives and counts mechanical oscillations in a crystal.
Atomic clocks use quantum transitions
The SI second is defined using a specific transition frequency in cesium-133.
Timekeeping supports modern infrastructure
Navigation, telecommunications and scientific measurement depend on precise timing.
Source trail: NIST: SI units
This page explains scientific concepts for general learning. It does not replace laboratory safety procedures, professional engineering guidance, or individualized medical advice.