210nm

210 nm refers to a wavelength of electromagnetic radiation. This wavelength falls within the ultraviolet (UV) part of the spectrum. Specifically, it is considered to be in the UVC range, which is a subdivision of ultraviolet light. UVC radiation has a shorter wavelength and higher energy compared to UVA and UVB.

The Earth's atmosphere, particularly the ozone layer, absorbs most of the UVC radiation that reaches our planet from the sun. Consequently, very little UVC radiation from natural sources reaches the Earth's surface. This is a significant factor in its biological effects. Due to its high energy, UVC radiation is germicidal, meaning it can kill or inactivate microorganisms such as bacteria, viruses, and fungi. This property makes UVC light useful in various sterilization and disinfection applications.

Artificial sources of 210 nm radiation exist, often through specialized lamps. These lamps are employed in water purification systems, air sanitizers, and medical sterilization equipment. It is also a wavelength relevant in certain scientific research fields, including photochemistry and spectroscopy. Due to its potential to damage living tissues, including skin and eyes, direct exposure to UVC radiation at 210 nm is generally avoided and safety precautions are necessary when working with sources that emit at this wavelength.