The interaction of radiation with matter is an everyday event in nature, we can recall phenomena such as photosynthesis, sunlight interaction with plants to produce food and the generation of vitamin D in our skin. With the formation of massive systems, galaxies, stars, planets, in the early universe, electromagnetic radiation was established, which is characterized by containing wavelengths from the kilometer radio waves to shorter lengths 10-12 m, gamma rays, through visible radiation detected by the retina. In this informative article, for the general public, based on the work by Duque et al [1], the objective is to describe the concepts involved in the interaction of light with semiconductor nanostructures.