Revolutions per Hour to Cycles per Minute Converter

Revolutions per hour (rph) is a unit of rotational frequency representing the number of complete rotations around a fixed axis in one hour. It's used for very slow rotational systems and astronomical observations.

RPH became useful for describing very slow rotational systems such as astronomical observations, large industrial equipment, and systems where rotational speeds are extremely low. It provided appropriate scaling for applications where RPM would result in very small decimal numbers.

RPH is used for astronomical observations (planetary rotation), very slow industrial processes, large rotating equipment, and systems with extremely low rotational speeds. It's found in astronomical calculations and specifications for very slow rotating machinery.

Cycles per minute (cpm) is a unit of frequency representing the number of complete cycles of a periodic phenomenon occurring in one minute. It's used for moderate-frequency periodic processes and mechanical systems.

Cycles per minute developed for describing periodic processes that occur at moderate rates, particularly in mechanical systems, industrial processes, and biological applications where minute-based measurements were more practical than second-based measurements.

CPM is used in industrial process control, mechanical systems, biological monitoring, and applications where periodic events occur at moderate rates. It's found in process equipment specifications, biological rhythm measurements, and industrial automation systems.