What's ultraviolet light/ black light is use for
What’s it’s used for
Hospitals use UV lamps to sterilise surgical equipment and the air in operating theatres.
Food and drug companies also use UV lamps to sterilise their products.
Ultraviolet (UV) light treatment is used primarily in cases of severe psoriasis
that have not responded to other medications or in cases affecting large portions of the body.
Suitable doses of
Ultravioletrays cause the body to produce vitamin D, and this is
usedby doctors to treat vitamin D deficiency and some skin disorders.
Wavelenth, Frequency, Velocity, Other key facts
16Hz (800 THz to 30 PHz) and wavelengths from 10
-8m to 3.8*10
-7m (10 nm to 380 nm). Prolonged exposure to UV light causes sunburn and can cause skin cancer. The earth's ozone layer absorbs most of the incoming UV light from the sun