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Angular frequency
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<p>In <a href="/facts/Physics/a7aH2y08">physics</a>, angular frequency (symbol <i>ω</i>), also called angular speed and angular rate, is a <a href="/facts/Scalar_(physics)/05uvvP8N">scalar</a> measure of the <a href="/facts/Angle/gFUTEQYq">angle</a> <a href="/facts/Rate_(mathematics)/sMy2QGsK">rate</a> (the angle per unit time) or the <a href="/facts/Temporal_rate_of_change/sMy2QGsK">temporal rate of change</a> of the <a href="/facts/Phase_(waves)/cpGtuVll">phase</a> <a href="/facts/Function_argument/LcuLbbSq">argument</a> of a <a href="/facts/Sinusoidal_waveform/mD1CB09M">sinusoidal waveform</a> or <a href="/facts/Sine_function/gQ6LXK8z">sine function</a> (for example, in oscillations and waves). Angular frequency (or angular speed) is the magnitude of the <a href="/facts/Pseudovector/c3b5GgWD">pseudovector</a> quantity <i><a href="/facts/Angular_velocity/2n8JljAT">angular velocity</a></i>. </p><p>Angular frequency can be obtained multiplying <i><a href="/facts/Rotational_frequency/VqLm3L3R">rotational frequency</a></i>, <i>ν</i> (or ordinary <i><a href="/facts/Frequency/QUSbPaW8">frequency</a></i>, <i>f</i>) by a full <a href="/facts/Turn_(unit)/QczxAyuM">turn</a> (2<a href="/facts/Pi/vC0UBj1q">π</a> <a href="/facts/Radians/Srd38Sxa">radians</a>): <i>ω</i> = 2π rad⋅<i>ν</i>. It can also be formulated as <i>ω</i> = d<i>θ</i>/d<i>t</i>, the <a href="/facts/Instantaneous_rate_of_change/7Ito70Dh">instantaneous rate of change</a> of the <a href="/facts/Angular_displacement/qoqvM9Np">angular displacement</a>, <i>θ</i>, with respect to time, <i>t</i>. </p>