Definition:Harmonic Wave/Amplitude
< Definition:Harmonic Wave(Redirected from Definition:Amplitude of Harmonic Wave)
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Definition
Let $\phi$ be a harmonic wave expressed as:
- $\forall x, t \in \R: \map \phi {x, t} = a \map \cos {\omega \paren {x - c t} }$
The amplitude of $\phi$ is the constant $a$.
Sources
- 1955: C.A. Coulson: Waves (7th ed.) ... (previous) ... (next): Chapter $\text {I}$: The Equation of Wave Motion: $\S 3$