UV light

Ultraviolet (UV) light is a type of electromagnetic radiation with wavelengths shorter than visible light but longer than X-rays. It’s emitted by the sun and some artificial sources like blacklights. UV light is responsible for tanning and sunburns, and it plays a role in vitamin D production in the skin. However, excessive exposure can damage skin and eyes, increasing the risk of skin cancer. UV light is also used in sterilization tools because it can kill bacteria and viruses. While invisible to the naked eye, UV light has significant effects on health and technology.