UV-C’s effects on the human body vary depending on length of exposure, but can cause painful burns on the skin.
It can also cause temporary damage to the cornea if observed directly.
Aside from these threats, UV-C is a known carcinogen for human skin.
Is UV C light safe?
UV Light That Is Safe for Humans but Bad for Bacteria and Viruses. Scientists have known for decades that broad-spectrum UVC light, which has a wavelength of between 200 to 400 nanometers (nm), is highly effective at killing bacteria and viruses by destroying the molecular bonds that hold their DNA together.
Are UV lights harmful to humans?
The UV spectrum thus has effects both beneficial and harmful to human health. The lower wavelength limit of human vision is conventionally taken as 400 nm, so ultraviolet rays are invisible to humans, although some people can perceive light at slightly shorter wavelengths than this (see below).
What does UV C light kill?
Ultraviolet germicidal irradiation (UVGI) is a disinfection method that uses short-wavelength ultraviolet (UV-C) light to kill or inactivate microorganisms by destroying nucleic acids and disrupting their DNA, leaving them unable to perform vital cellular functions.
Is UV light harmful to eyes?
UV rays may lead to macular degeneration, a leading cause of vision loss for older Americans. UV rays, especially UV-B rays, may also cause some kinds of cataracts. A cataract is a clouding of the eye’s natural lens, the part of the eye that focuses the light we see.