Far-UVC is a type of germicidal ultraviolet (GUV) technology, with wavelengths between 200-235 nm, that has emerged as a highly promising approach for indoor air disinfection, offering enhanced efficacy and safety compared to conventional 254-nm upper-room GUV systems.

Resources

• Blatchley et al. 2022 offer a general overview of far-UVC. 
• "Far-UVC Light Update: No, LEDs are not around the corner (tweetstorm)" by David Manheim on Lesswrong
• "Far-Ultraviolet Light in Public Spaces to Fight Pandemic is a Good Idea but Premature" by Kirby Sikes on Lesswrong