Revolutions per Minute to Millihertz Converter

Revolutions per minute (rpm) is a unit of rotational frequency representing the number of complete rotations around a fixed axis in one minute. It's one of the most common units for measuring rotational speed in mechanical systems.

RPM became standard with the development of mechanical machinery during the Industrial Revolution. It provided an intuitive way to measure and specify rotational speeds for engines, motors, and machinery, becoming universally adopted in mechanical engineering.

RPM is extensively used in automotive engines, electric motors, machinery, and mechanical systems. It's standard for engine specifications, motor ratings, turntable speeds, and virtually all rotating mechanical equipment specifications.

A millihertz (mHz) is a unit of frequency equal to one thousandth of a hertz (0.001 Hz). It represents very low frequencies found in extremely slow oscillations, geological processes, and some biological rhythms.

The millihertz became necessary for describing extremely slow periodic phenomena in scientific research. It was particularly important in geophysics, astronomy, and biological studies where natural cycles occur over very long time periods.

Millihertz is used in geophysics for seismic wave analysis, astronomy for stellar oscillations, biological research for circadian rhythms, and precision timing applications. It's essential for measuring very slow natural cycles and long-period oscillations.