UV-A,
* Medium wave UV that extends from 280 to 320 nm, also called UV-B,
* Short wave UV that extends from 200 to 280 nm, also called UV-C.(These terms should not be confused with the parts of the radio spectrum with similar names.)

There are two ways to use UV radiation to take photographs - reflected ultraviolet and ultraviolet induced fluorescence photography. Reflected ultraviolet photography finds practical use in medicine,