Light also acts like a particle : the “Photon”
When detectors (or atoms) “see” light, it arrives in discreet packages, which we call “photons”. You can think of each photon as having a wavelength. The energy of a photon depends on its wavelength or frequency:   E ~ f ~ c / l .
As a whole, the photons have the statistical behavior of waves of that wavelength. They experience “interference” like waves.