What is ultraviolet light? Ultraviolet light is light radiation with a wavelength between 180-400nm. According to the wavelength and its effects on the body, ultraviolet light can be divided into three bands: short-wave ultraviolet (UVC, 180-280nm), medium-wave ultraviolet (UVB, 280-320nm), and long

Phototherapy is a physical therapy technique that uses the radiation energy of light to treat diseases or for beauty purposes. It includes infrared, visible light, ultraviolet, photodynamic therapy, etc. The goal is to use the beneficial effects of light to treat diseases

Light is a substance with the dual nature of electromagnetic waves and particle flow. Light has both electromagnetic wave characteristics such as wavelength, frequency, reflection, refraction, and quantum characteristics such as energy, absorption, photoelectric effect, and light pressure. Light can