UV lamps are devices that emit ultraviolet light, which is a type of electromagnetic radiation. They are commonly used for various applications, including sterilization, curing of materials, and in tanning beds. UV light can kill bacteria and viruses, making these lamps useful in hospitals and laboratories. There are different types of UV lamps, including mercury vapor lamps and LED UV lamps. Each type emits varying wavelengths of UV light, categorized into three types: UVA, UVB, and UVC. UVC is the most effective for disinfection, while UVA and UVB are often used in tanning and phototherapy.