Ultraviolet (UV) research is the study of electromagnetic radiation with a wavelength shorter than that of visible light, but longer than X-rays. UV light is divided into three categories based on wavelength: UVA, UVB, and UVC. UV research encompasses a wide range of applications, from investigating the effects of UV radiation on biological organisms and materials, to exploring the use of UV light in sterilization, disinfection, and phototherapy. UV research is important for understanding the potential risks and benefits of UV exposure, as well as for developing new technologies and treatments that harness the unique properties of UV light.