Ultraviolet–visible absorption
refers to absorption spectroscopy or reflectance spectroscopy in part of the ultraviolet and the full, adjacent visible spectral regions / From Wikipedia, the free encyclopedia
Ultraviolet-visible absorption is a process where a molecule absorbs ultraviolet or visible light that excites electrons (makes them high energy). This energy causes an electronic transition from a ground state (non excited) to an excited state.[1]
This is used in a technique of absorption spectroscopy known as ultraviolet-visible spectroscopy.