Question: Why Is Ultraviolet Light Bad?

Why is UV light dangerous?

Question: Why Is Ultraviolet Light Bad?

Exposure to ultraviolet (UV) radiation is a major risk factor for most skin cancers.

Sunlight is the main source of UV rays.

Even though UV rays make up only a very small portion of the sun’s rays, they are the main cause of the sun’s damaging effects on the skin.

UV rays damage the DNA of skin cells.

Is ultraviolet dangerous?

UVB rays, which affect skin’s top layer, cause skin cancer and most sunburns. Although UVA and UVB rays pose the greatest risk for sun damage, people who work with welding torches or mercury lamps may be exposed to UVC rays, the most dangerous type of UV radiation.

Why is UV light harmful to your eyes?

What Eye Problems Can UV Rays Cause? 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.

Is ultraviolet 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.

Photo in the article by “Wikimedia Commons” https://commons.wikimedia.org/wiki/File:Afghanite_from_Afghanistan_(ultraviolet_light).jpg