A *frequency* determines how often happens something happens in a given interval of time. One example is our heartbeat. It is usually measured in "beats per minute" (bpm) and tells us how often our heart beats per minute. In physics, frequency are more often measured in Hertz (Hz for short). The unit tells us how often something happens per second. In the context of [[Light|light]], the frequency determines the color of the light. Low frequencies are associated to heat radiation or red colors, depending on the frequency. As the frequency rises, the color changes to blue colors eventually to UV radiation. More information is available in the entry about the [[Visible Spectrum| visible spectrum of light]]. The frequency of light refers to the amount of maxima and minima of the [[Electric Field|electric field]] and the [[Magnetic Field|magnetic field]] are encountered per second. >[!read]- Further Reading >- [[Light]] >- [[Wavelength]] >- [[Electromagnetic Wave]] >[!ref]- References