millihertsiästä

Millihertsi (mHz) is a unit of frequency in the International System of Units (SI). It represents one-thousandth of a hertz, meaning one cycle per thousand seconds. The hertz (Hz) is the SI base unit of frequency, defined as one cycle per second. Therefore, 1 mHz is equal to 0.001 Hz. This unit is typically used to describe very low frequencies, such as those found in geological phenomena, biological rhythms, or certain slow-moving mechanical systems. For instance, seismic waves can sometimes be measured in millihertz, indicating that their oscillations occur over periods of minutes or even hours. Similarly, the slow, cyclical changes in some biological processes or astronomical events might be expressed using millihertz. While hertz is commonly used for everyday frequencies like those of household electricity or audio signals, millihertz is reserved for situations where the rate of repetition is significantly slower. The prefix "milli-" signifies a factor of 10⁻³, making millihertsi a sub-multiple of the base unit.