Physics
Wave Frequency
Quick fact
The frequency of a wave is measured in hertz (Hz), where 1 Hz means one cycle per second. The human ear can typically hear frequencies between 20 Hz and 20,000 Hz.
Why this is interesting
Have you ever wondered why some music sounds higher or lower than others? It all comes down to something called wave frequency.
Read the full explanation
Understanding Wave Frequency
Imagine a wave traveling through water or air. Each time the wave goes up and down, that’s one full cycle. If it does this many times in a second, we call that number the frequency. The more cycles per second, the higher the pitch of a sound or the brighter the light.
A deeper explanation
Wave frequency is directly related to how quickly energy moves through space or a medium. Higher frequencies mean shorter wavelengths and faster energy transfer. For example, high-frequency radio waves carry information over long distances, while low-frequency waves are used for things like seismic activity detection. The relationship between frequency (f), wavelength (λ), and wave speed (v) is given by the equation v = f × λ.