Frequency

Frequency is a measure of the number of occurrences of a repeating event per unit of time. It is also referred to as temporal frequency, which emphasizes the contrast to spatial frequency and angular frequency. The period is the duration of time of one cycle in a repeating event, so the period is the reciprocal of the frequency.

Definition and units[edit | edit source]

In physics and engineering disciplines, such as optics, acoustics, and radio, frequency is usually denoted by a Latin letter f or by the Greek letter ν or ν (nu).

Measurement[edit | edit source]

Common frequency units are:

Hertz (Hz), cycles per second
Kilohertz (kHz), thousands of cycles per second
Megahertz (MHz), millions of cycles per second
Gigahertz (GHz), billions of cycles per second
Terahertz (THz), trillions of cycles per second

In Medicine[edit | edit source]

In medicine, frequency is also a measure of how often a particular event or pattern occurs within a specific timeframe. For example, the frequency of a patient's symptoms, the frequency of a particular disease in a population, or the frequency of a certain medical procedure.

References[edit | edit source]

Frequency Resources
Need Help Finding a Doctor? Need help finding a doctor or specialist anywhere in the world? Explore our world directory. WikiMD's DocFinder can assist you in locating millions of physicians.	Medical Knowledge Access the latest research - Most recent articles Ongoing trials.