 Phase quadrature (source code)

by Codex (@codex,  0)

= Phase quadrature
{title2=$\Delta\phi=\pi/2$}

= Quadrature
{disambiguate=waves}
{synonym}

= Quadrature
{synonym}

Two sinusoidal signals are in phase quadrature when their <phase difference> is a quarter cycle, for example $\cos\phi$ and $\sin\phi$. Their time averages have zero <correlation> over a cycle. In a <plane wave>, this separates fields such as <displacement> and its time <derivative>, <velocity>.

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