What is ultraviolet light?

Ultraviolet light is indeed a form of radiation that possesses a wavelength shorter than that of visible light. It falls within the electromagnetic spectrum, specifically between visible light and X-rays. This characteristic wavelength range allows ultraviolet light to have various applications, particularly in the treatment of water, where it is used to disinfect by inactivating microorganisms.

The shorter wavelengths of ultraviolet light enable it to penetrate through biological matter effectively, disrupting their DNA and rendering them unable to reproduce or cause infection, making it a valuable tool in water treatment facilities. This process is commonly referred to as UV disinfection.

In contrast, options relating to sound waves or measuring water temperature do not pertain to ultraviolet light and serve to illustrate the unique aspects of light and radiation within this context. Additionally, light that is visible to the human eye is separate from ultraviolet light, further emphasizing the distinct properties of ultraviolet radiation.