IEVref: | 103-07-06 | ID: | |

Language: | en | Status: Standard | |

Term: | phase difference | ||

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Symbol: | φ
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Definition: | for two sinusoidal quantities of the same frequency in a given order, difference between their initial phases with possible addition of a multiple of 2π so that the difference is greater than −π and not greater than π Note 1 to entry: For the quantities ${a}^{\prime}(t)=\widehat{{A}^{\prime}}\text{cos}(\omega \text{\hspace{0.05em}}t+{{\vartheta}^{\prime}}_{0})$ and ${a}^{\u2033}(t)=\widehat{{A}^{\u2033}}\text{cos}(\omega \text{\hspace{0.05em}}t+{{\vartheta}^{\u2033}}_{0})$, the phase difference is $\varphi ={{\vartheta}^{\u2033}}_{0}-{{\vartheta}^{\prime}}_{0}+2\pi n$, where | ||

Publication date: | 2009-12 | ||

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Internal notes: | 2017-02-20: Editorial revisions in accordance with the information provided in C00020 (IEV 103) - evaluation. JGO | ||

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Note 1 to entry: For the quantities ${a}^{\prime}(t)=\widehat{{A}^{\prime}}\text{cos}(\omega \text{\hspace{0.05em}}t+{{\vartheta}^{\prime}}_{0})$ and ${a}^{\u2033}(t)=\widehat{{A}^{\u2033}}\text{cos}(\omega \text{\hspace{0.05em}}t+{{\vartheta}^{\u2033}}_{0})$, the phase difference is $\varphi ={{\vartheta}^{\u2033}}_{0}-{{\vartheta}^{\prime}}_{0}+2\pi n$, where *n* is an integer, chosen so that $-\pi <\varphi \le \pi$.