Frequency: Difference between revisions
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'''Frequency''' is a property of an oscillation, [[vibration]], or other regularly-repeating phenomenon. The frequency of such a phenomenon is the number of repetitions in a unit [[time]]. In the [[SI]] system of units, frequency is measured in [[Hertz]] ('''Hz'''), the number of repetitions in one [[second]]. | '''Frequency''' is a property of an oscillation, [[vibration]], or other regularly-repeating phenomenon. The frequency of such a phenomenon is the number of repetitions in a unit [[time]]. In the [[SI]] system of units, frequency is measured in [[Hertz]] ('''Hz'''), the number of repetitions in one [[second]]. | ||
Frequency is inversely proportional to [[wavelength]], which is a length measurement. :<math>\lambda = \frac{c}{f} \,\!</math> , | |||
:<math>E=hf \,\!</math> , | |||
where c = 299,792,458 m/s (the [[speed of light]]) and h = 6.626 x 10<sup>-34</sup> Js ([[Planck's constant]]) | |||
Revision as of 12:49, 28 September 2008
Frequency is a property of an oscillation, vibration, or other regularly-repeating phenomenon. The frequency of such a phenomenon is the number of repetitions in a unit time. In the SI system of units, frequency is measured in Hertz (Hz), the number of repetitions in one second.
Frequency is inversely proportional to wavelength, which is a length measurement. : ,
- ,
where c = 299,792,458 m/s (the speed of light) and h = 6.626 x 10-34 Js (Planck's constant)