Final answer:
Ultraviolet (UV) light has security features that can be checked using special equipment. It is shorter in wavelength and higher in energy than visible light. UV light is used in various applications such as sterilization, treatment of skin conditions, and substance identification.
Step-by-step explanation:
Many IDs have security features that allow you to further check them under ultraviolet (UV) light. UV light is a type of radiation that is shorter in wavelength and higher in energy than visible light. It is commonly used in various applications such as sterilizing workspaces and tools, treating skin conditions, and identifying substances.
UV radiation is also used to detect details smaller than those observable with visible-light microscopes and to make certain substances glow in characteristic visible wavelengths, a process called fluorescence.