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States that [[gene frequency]] remains constant across generations (no [[genetic drift]]) unless a force

The international ([[SI]]) unit of [[frequency]], with units of inverse [[second]]s, commonly called cycles per seocond.

==Operating frequency tradeoffs== Satellites operating in the [[ITU Frequency Bands|Ultra-High Frequency (UHF)]] offer the advantage of simple receivers and antennas, with plausibl

...t frequency'' from the local oscillator, and the known unmodulated carrier frequency. ...ubsequent stages of the receiver are pretuned, such as 455 kHz in a medium-frequency AM broadcast radio.

...r wave of the basic waveform. While the term is most often used with radio frequency carrier waves, it can apply to sound waves as well, such as when a basic st ...dulation:Changing the frequency (i.e., the time between peaks of the basic frequency)

Electromagnetic noise proportional to f^-n, where f = frequency and n={0,1,2).

In a sound, the overall deviation of the frequency ratios from those of an [[overtone]] series.

The asymptotic frequency of a subset of the natural numbers.

...frequency bands|high frequency (HF)]] or [[ITU frequency bands| very high frequency (VHF)]].

a symmetrical bell-shaped probability distribution representing the frequency of random variations of a quantity from its mean.

The range of [[frequency|frequencies]] that can be [[hearing|heard]] by a [[life|living]] [[organism

A physical medium, including a designated [[frequency]] and physical scope, of the [[electromagnetic spectrum]], over which multi

The study of a system or object by means of selected [[frequency band]]s in the [[electromagnetic spectrum]].

...fs/bain/atmi02/tuning/default.html |title=12 Tone Equal Temperament (12TET)Frequency Table based on A4 = 440 Hz |author=Reginald Bain |year=2002 |accessdate=201

...in intensity of a signal when irradiation is carried out at the resonance frequency of a spatially proximal nucleus.

...[[SA-5 GAMMON]] [[surface-to-air missile]], operating in the [[EU-NATO-US frequency bands|H-band]]

{{r|Frequency modulation}} {{r|Frequency synthesizer}}

{{r|Frequency modulation}} {{r|Frequency agility}}

{{r|Frequency modulation|FM}}

...ber of allies, '''AN/[[SSQ-57]]''' [[sonobuoy]]s are passive acoustic, low-frequency listening devices dropped from aircraft and helicopters. In [[antisubmarin ...ibrated low-frequency analysis and recording (LOFAR) sonobuoy. It is a low-frequency version of the earlier AN/SSQ-41 passive sonobuoy, no longer in service. On