frequency

Also known as temporal frequency, ordinary frequency

Frequency is the number of occurrences of a repeating event per unit of time. Frequency is an important parameter used in science and engineering to specify the rate of oscillatory and vibratory phenomena, such as mechanical vibrations, audio signals (sound), radio waves, and light.

AI overview

Frequency measures how often something repeats in a given amount of time—for example, how many times a wave goes up and down in one second. Scientists and engineers use frequency to describe and understand repeating phenomena like vibrations, sound, radio waves, and light, making it essential for technologies like radios, speakers, and telecommunications.

AI-generated from the Wikipedia summary — may contain errors.

Key facts

Physical quantity.name: Frequency
Physical quantity.image: ลูกตุ้มธรรมชาติ.gif
Physical quantity.caption: A pendulum making 25 complete oscillations in 60 s, a frequency of 0.41 Hz
Physical quantity.unit: hertz (Hz)
Physical quantity.baseunits: s−1
Physical quantity.dimension: wikidata

via Wikipedia infobox

Wikidata facts

Image: Frekvenser art 2.png

Show 3 more facts

Commons category: Frequency
equivalent class: purl.org/dc/terms/Frequency
quantity symbol (string): ν

Sources (4)

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~13 min read

Article

20 sections

Contents

Definitions and units {{anchor|Definitions|Units|Definition|Unit}}
Period versus frequency
Related quantities
In wave propagation {{anchor|Frequency of waves}}
Measurement
Counting
Stroboscope
Frequency counter
Heterodyne methods
Examples
Light
Sound
Line current
Aperiodic frequency
See also
Notes
References
Sources
Further reading
External links

The interval of time between events is called the period. It is the reciprocal of the frequency. For example, if a heart beats at a frequency of 120 times per minute (2 hertz), its period is one half of a second.