UVC, or ultraviolet C, is a type of ultraviolet light with a wavelength range of 100-280 nanometers. It is the shortest and most energetic form of UV radiation, and is often referred to as germicidal UV due to its ability to destroy bacteria, viruses, and other microorganisms. UVC is commonly used in sterilization and disinfection processes, as it has the power to break down the DNA of these harmful pathogens, rendering them unable to reproduce and cause harm. However, UVC can also be harmful to humans and other living organisms, which is why it is typically used in controlled environments or with protective measures in place. Overall, UVC plays a crucial role in maintaining a clean and safe environment, making it an essential tool in various industries such as healthcare, food processing, and water treatment.