Light and Emission Spectrum
The electromagnetic spectrum represents all of the possible combinations of the frequency of the energy wave and its corresponding energies, as seen below.
Our eyes are evolutionarily designed to only detect a small window of electromagnetic (EM) radiation, which is referred to as the visible spectrum; however, as you can see, there are various types of EM radiation that is found in the Universe, many of which you are probably familiar with. For example, ultraviolet rays coming from the Sun are much more dangerous than visible light because they contain more energy. That's why excessive amounts of Sun during the summer or radiation from tanning beds can cause skin cancer: the very energetic UV rays causes mutations in the DNA of skin cells.
