Frequencies
Frequency is the number of occurrences of a repeating event per unit time. In physics, it is most commonly associated with waves and oscillations. The standard unit is the hertz (Hz), defined as one cycle per second. The symbol f is often used for frequency, though the Greek letter ν is also common in some contexts; angular frequency ω = 2πf expresses the rate in radians per second.
For a traveling wave, frequency is related to the wave's speed v and wavelength λ by f =
In acoustics, audible frequencies range roughly from 20 Hz to 20 kHz, while in electronics, the concept
In data analysis, frequencies are analyzed via Fourier transforms, yielding a frequency spectrum that reveals the