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Name |
Beat Frequency |
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Equation |
ω
beat
=
ω
1
-
ω
2
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Definition of terms |
ωbeat = beat frequency, ω1 , ω2 = frequencies of EM waves |
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Comments |
If two electromagnetic waves of frequency ω1 and ω2 are superposed (added), then the combined intensity will oscillate with a frequency ωbeat = ω1 − ω2. This is known as beating, and this frequency is known as the beat frequency. |
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References
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Optics , E Hecht, A Zajac, Addison-Wesley, 1974 |
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