IEVref: 103-07-06 ID: Language: en Status: Standard Term: phase difference Synonym1: Synonym2: Synonym3: Symbol: φ 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 πNote 1 to entry: For the quantities ${a}^{\prime }\left(t\right)=\stackrel{^}{{A}^{\prime }}\text{cos}\left(\omega \text{ }t+{{\vartheta }^{\prime }}_{0}\right)$ and ${a}^{″}\left(t\right)=\stackrel{^}{{A}^{″}}\text{cos}\left(\omega \text{ }t+{{\vartheta }^{″}}_{0}\right)$, the phase difference is $\varphi ={{\vartheta }^{″}}_{0}-{{\vartheta }^{\prime }}_{0}+2\pi n$, where n is an integer, chosen so that $-\pi <\varphi \le \pi$. Publication date: 2009-12 Source: Replaces: Internal notes: 2017-02-20: Editorial revisions in accordance with the information provided in C00020 (IEV 103) - evaluation. JGO CO remarks: TC/SC remarks: VT remarks: Domain1: Domain2: Domain3: Domain4: Domain5: