Counts-per-time rates Rate (mathematics)
radioactive decay, amount of radioactive material in 1 nucleus decays per second, measured in becquerels in computing: bit rate, number of bits conveyed or processed computer per unit of time symbol rate, number of symbol changes (signalling events) made transmission medium per second sampling rate, number of samples (signal measurements) per second miscellaneous definitions: rate of reinforcement, number of reinforcements per unit of time, per minute heart rate, measured in beats per minute