295nm

295 nanometers (nm) refers to a specific wavelength in the ultraviolet (UV) spectrum, falling within the UVC range. Ultraviolet light spans wavelengths from approximately 10 nm to 400 nm, with the UVC band covering roughly 100 nm to 280 nm. At 295 nm, the radiation is classified as far-UVC, a subset of UVC light that has gained attention for its potential applications in disinfection and microbial deactivation.

The 295 nm wavelength is notable for its ability to damage the DNA of microorganisms, including bacteria and viruses, by inducing photochemical reactions. Unlike shorter UVC wavelengths (e.g., 254 nm), which can penetrate human skin and eyes, 295 nm light is largely absorbed by the outer layers of human cells, making it less harmful to humans while still effective against pathogens. This characteristic has sparked interest in its use for surface and air disinfection in healthcare, public spaces, and industrial settings.

Research on 295 nm light has demonstrated its efficacy in reducing the viability of various pathogens, such as *SARS-CoV-2*, *E. coli*, and *MRSA*. However, its practical implementation requires careful consideration of factors like exposure duration, distance from the light source, and environmental conditions. While promising, further studies are needed to fully assess its safety, long-term effects, and optimal deployment strategies.

In addition to disinfection, 295 nm light has applications in photolithography, materials science, and analytical chemistry, where precise UV wavelengths are used for etching, curing, and spectroscopic analysis. Its use in these fields relies on specialized equipment, such as mercury lamps or LED arrays, which can be tuned to emit light at specific wavelengths.