The measurement of light's wavelength and frequency is typically conducted using standard spectrometers and diffraction gratings. These instruments allow for precise determination of wavelength by analyzing the light's behavior when it passes through a diffraction grating, which separates light into its constituent wavelengths. The relationship between wavelength and frequency is fundamental, as they are inversely related; the frequency corresponds to the oscillation rates of the electric and magnetic fields associated with the light wave. Thus, experimental measurements of wavelength directly inform the frequency, reinforcing the principle that the frequency of light is equal to the frequency of its electric and magnetic field motions.
