The Different Ways of Seeing an Object

Visible is only a very tiny proportion, not even a whole order of magnitude, just from 400 to 700 roughly nanometers. It's defined by the region that we can see with our eyes. The sun also emits quite a lot of energy in other regions as well, but again, it's most of its energy on visible light. ultraviolet radiation is even higher energy than the visible spectrum, and photons in this range carry enough energy to do more chemical damage.