Here's a more detailed explanation:

* Definition: Frequency is the number of wave cycles (peaks and troughs) that pass a fixed point in one second.

* Unit: The standard unit for frequency is Hertz (Hz). One Hertz represents one cycle per second.

* Relationship to wavelength: Frequency is inversely proportional to wavelength. This means that a higher frequency wave has a shorter wavelength, and a lower frequency wave has a longer wavelength.

* Examples:

* Sound: Higher frequency sounds are perceived as higher pitched. Lower frequency sounds are perceived as lower pitched.

* Light: Visible light is a wave with a range of frequencies, each corresponding to a different color. Higher frequency light is perceived as blue or violet, while lower frequency light is perceived as red or orange.

Let me know if you'd like more details about any of these aspects of wave frequency!