Other important wave phenomena include standing waves, periodic oscillations, and vibrations. Standing waves exhibit quantization, since their wavelengths are limited to discrete integer multiples of some characteristic lengths.

Electromagnetic radiation that passes through two closely spaced narrow slits having dimensions roughly similar to the wavelength will show an interference pattern that is a result of constructive and destructive… The energy of a photon is related to the frequency (or alternatively, the wavelength) of the radiation as E = hν (or E = h c λ ), where h is Planck's constant.

period — (also, series) horizontal row of the periodic table. standing wave — (also, stationary wave) localized wave phenomenon characterized by discrete wavelengths determined by the boundary conditions used to generate the waves; standing waves are…. energy of a photon — related to the frequency (or alternatively, the wavelength) of the radiation as E = hν (or E = h c λ ), where h is Planck's constant. interference pattern — pattern typically consisting of alternating bright and dark fringes; it results from constructive and destructive interference of waves.