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  2. Angular frequency - Wikipedia

    en.wikipedia.org/wiki/Angular_frequency

    A sphere rotating around an axis. Points farther from the axis move faster, satisfying ω = v / r.. In physics, angular frequency (symbol ω), also called angular speed and angular rate, is a scalar measure of the angle rate (the angle per unit time) or the temporal rate of change of the phase argument of a sinusoidal waveform or sine function (for example, in oscillations and waves).

  3. Radian per second - Wikipedia

    en.wikipedia.org/wiki/Radian_per_second

    The radian per second (symbol: rad⋅s −1 or rad/s) is the unit of angular velocity in the International System of Units (SI). The radian per second is also the SI unit of angular frequency (symbol ω, omega). The radian per second is defined as the angular frequency that results in the angular displacement increasing by one radian every ...

  4. Wavenumber - Wikipedia

    en.wikipedia.org/wiki/Wavenumber

    The angular wavenumber may be expressed in the unit radian per meter (rad⋅m −1), or as above, since the radian is dimensionless. For electromagnetic radiation in vacuum, wavenumber is directly proportional to frequency and to photon energy. Because of this, wavenumbers are used as a convenient unit of energy in spectroscopy.

  5. Angular velocity - Wikipedia

    en.wikipedia.org/wiki/Angular_velocity

    In physics, angular velocity (symbol ω or , the lowercase Greek letter omega), also known as the angular frequency vector, [1] is a pseudovector representation of how the angular position or orientation of an object changes with time, i.e. how quickly an object rotates (spins or revolves) around an axis of rotation and how fast the axis itself changes direction.

  6. Rotational frequency - Wikipedia

    en.wikipedia.org/wiki/Rotational_frequency

    Angular frequency gives the change in angle per time unit, which is given with the unit radian per second in the SI system. Since 2π radians or 360 degrees correspond to a cycle, we can convert angular frequency to rotational frequency by ν = ω / 2 π , {\displaystyle \nu =\omega /2\pi ,} where

  7. Stokes's law of sound attenuation - Wikipedia

    en.wikipedia.org/wiki/Stokes's_law_of_sound...

    In acoustics, Stokes's law of sound attenuation is a formula for the attenuation of sound in a Newtonian fluid, such as water or air, due to the fluid's viscosity.It states that the amplitude of a plane wave decreases exponentially with distance traveled, at a rate α given by = where η is the dynamic viscosity coefficient of the fluid, ω is the sound's angular frequency, ρ is the fluid ...

  8. Coriolis frequency - Wikipedia

    en.wikipedia.org/wiki/Coriolis_frequency

    Thus the Coriolis parameter, , is the angular velocity or frequency required to maintain a body at a fixed circle of latitude or zonal region. If the Coriolis parameter is large, the effect of the Earth's rotation on the body is significant since it will need a larger angular frequency to stay in equilibrium with the Coriolis forces.

  9. Phase velocity - Wikipedia

    en.wikipedia.org/wiki/Phase_velocity

    If the wave has higher frequency oscillations, the wavelength must be shortened for the phase velocity to remain constant. [2] Additionally, the phase velocity of electromagnetic radiation may – under certain circumstances (for example anomalous dispersion ) – exceed the speed of light in vacuum, but this does not indicate any superluminal ...