Unit yHz
Name yoctohertz
Category Frequency
Details A yoctohertz (yHz) is a unit of frequency in the International System of Units (SI) and represents 10^(-24) hertz, or one septillionth (0.000000000000000000000001) of a hertz. In the field of frequency, the yoctohertz is an extremely small unit of measurement mainly used in scientific calculations and research to describe extremely low-frequency events that occur over incredibly long periods of time.

One hertz (Hz) is defined as one cycle per second, so one yoctohertz (1 yHz) represents one cycle occurring over a period of approximately 317 billion years, making it impractical for most applications in daily life. The yHz is mostly used in theoretical scientific scenarios, such as studying the oscillation of certain subatomic particles, or precisely describing the stability of atomic clocks.