Difference between revisions of "Frequency"
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(New page: '''Frequency''' is a measure of how many times a given event happens in a given period of time. It is directly related to wave mechanics, and is the reciprocal of period. The [[SI ...) |
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| − | '''Frequency''' is a measure of how many times a given event happens in a given period of time. It is directly related to [[wave]] mechanics, and is the reciprocal of [[period]]. The [[SI unit]] of frequency is the [[hertz]] (Hz), which corresponds to a single cycle per second, giving it the general unit of ''s''<sup>-1</sup>. Frequency cannot be modified by a physical process, although phenomena such as the [[Doppler Effect]] can change how frequency is perceived by a person in motion towards or away from an audio source. | + | '''Frequency''' is a measure of how many times a given event happens in a given period of time. It is directly related to [[wave]] mechanics, and is the reciprocal of [[period]]. The [[International_System_of_Units | SI unit]] of frequency is the [[hertz]] (Hz), which corresponds to a single cycle per second, giving it the general unit of ''s''<sup>-1</sup>. Frequency cannot be modified by a physical process, although phenomena such as the [[Doppler Effect]] can change how frequency is perceived by a person in motion towards or away from an audio source. |
[[Category:Physics]] | [[Category:Physics]] | ||
Revision as of 19:10, November 1, 2008
Frequency is a measure of how many times a given event happens in a given period of time. It is directly related to wave mechanics, and is the reciprocal of period. The SI unit of frequency is the hertz (Hz), which corresponds to a single cycle per second, giving it the general unit of s-1. Frequency cannot be modified by a physical process, although phenomena such as the Doppler Effect can change how frequency is perceived by a person in motion towards or away from an audio source.
