Higher resonances correspond to wavelengths that are integer divisions of the fundamental wavelength. Spectral radiance expresses radiance as a function of frequency or wavelength. Stimulated emission produces light that matches the input signal in wavelength, phase, and polarization. Similarly, would correspond to an infrared photon of wavelength or frequency . Diamond has a wide bandgap of corresponding to the deep ultraviolet wavelength of 225nanometers. Wavelength and frequency units are reciprocal. The refractive index of materials varies with the wavelength (and frequency) of light. Light output as a function of infrared wavelength (or equivalently, wavenumber). It absorbs at the 260 nm wavelength. It is evoked by light which has a dominant wavelength of roughly 495570 nm. They exhibit enhanced near-field amplitude at the resonance wavelength. Maxwell proposed that light consisted of electromagnetic waves of very short wavelength. These elements are a function of the wavelength (formula 5) of the electromagnetic radiation. Equivalently, the longer the photon's wavelength, the lower its energy. Diffraction depends on the relationship between the wavelength and the size of the obstacle.