Ultraviolet light is well known to be germicidal (at certain frequencies). It is used widely to keep food and liquids germ-free during processing and packaging, and has been built into aircraft ventilation systems to help prevent infections.
Ultraviolet light is well known to be germicidal (at certain frequencies). It is used widely to keep food and liquids germ-free during processing and packaging, and has been built into aircraft ventilation systems to help prevent infections.