Aperiodic frequency

Aperiodic frequency is the rate of incidence or occurrence of non-cyclic phenomena, including random processes such as radioactive decay. It is expressed in units of measurement of reciprocal seconds (s−1)[1] or, in the case of radioactivity, becquerels.[2]

It is defined as a ratio, f = N/T, involving the number of times an event happened (N) during a given time duration (T); it is a physical quantity of type temporal rate.

See also


  1. ^ Lombardi, Michael A. (2007). "Fundamentals of Time and Frequency". In Bishop, Robert H. (ed.). Mechatronic Systems, Sensors, and Actuators: Fundamentals and Modeling. Austin: CRC Press. ISBN 9781420009002.
  2. ^ "Units with special names and symbols; units that incorporate special names and symbols". SI Brochure: The International System of Units (SI) (8th ed.). Section 2.2.2. 2014.

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